Supercontinuum in Multimode Fiber Les Lab 2023-01-28 | Episode 49#supercontinnum#whitelightlaser#laser This episode is a follow up video on a home made Supercontinuum Laser!This version uses Multimode Telecoms fiber, for much better efficiency, however this stuff also exhibits additional properties, including very bright combs, and what looks like self-mode cleaning...For a very good explanation of Stimulated Raman Scattering (the primary nonlinear process in this video) please check out: Your Favourite TA's video on Stimulated Raman Scattering here: youtube.com/watch?v=sZEGMDZKyPQIf you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!Previous episode: youtu.be/w1wSHizmbYg Nitrogen Laser used in this video:youtu.be/0MvXXwAizrMyoutu.be/ngs9zPdI_t0Dye Laser used in this video:youtu.be/-ny_-Y1MpRYInformation on Supercontinuum generation: rp-photonics.com/supercontinuum_generation.htmlSupercontinuum Academic paper:Lin, Chinlon; Stolen, R. H. (1976-02-15). "New nanosecond continuum for excited‐state spectroscopy". Applied Physics Letters. AIP Publishing. 28 (4): 216–218. doi:10.1063/1.88702. ISSN 0003-6951.0:00 Intro0:46 Multimode Fiber2:25 Measuring pulsed Lasers3:55 Dye Laser Joule meter measurement4:37 Dye Laser Pulse Width measurement5:27 Calculations7:27 Supercontinuum generation multimode fiber10:46 View of the Spectrum, bright combs!14:00 Measuring Supercontinuum power and efficiency14:40 Spectrometer measurement15:15 100m of mutimode fiber!16:15 Brilliant full spectrum combs!17:23 Close up of fiber18:01 More gratuitous beam shots!18:37 Long exposure photos!19:07 Outro
Most powerful diode Laser OVERDRIVEN! Nanosecond Laser! Les Lab 2024-09-20 | JLCPCB PCB Fab & Assembly from $2! Sign up to Get $60 Coupons: jlcpcb.com/?from=leslaboratoryJLCPCB Engineers Day deals to get up to $125 in coupons and a chance to win a $150 Amazon gift card : jlcpcb.com/engineers-day?from=ACT Episode 65#laser#nanosecond#pulsedlaser#jimwilliamsLet's drive the worlds most powerful visible laser diodes FAR beyond its original specifications!Running at hundreds of volts and over 80 amps, with a home-made Avalanche Nanosecond Pulsed Laser Diode Driver!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!Links!:PCB Design Files: github.com/leswright1977/avalanche-laser-diode-driver (This is a work in progress and data is being added as and when)NUBM-47 datasheet: apslasers.com/wp-content/uploads/2022/06/7W-Blue-NUBM47-Datasheet-V3.pdfDye Laser driven by pulsed laser diodes: link.springer.com/article/10.1007/s00340-017-6664-4A whole range of visible and IR Laser diodes driven in pulsed mode:sciencedirect.com/science/article/pii/S2213597917300356Laser Peak Power Calculator: ophiropt.com/en/laser-peak-power-calculatorApplication note 47, the Jim Willams Driver (appendix D) analog.com/media/en/technical-documentation/application-notes/an47fa.pdf0:00 Intro0:24 The most powerful Visible Laser diode in the world!0:54 Pulsed Laser diodes1:17 Sensitive Laser diodes1:40 Scientific Literature on Pulsed visible Laser diodes!4:33 Extraordinary peak powers.6:12 Application note 47 the Jim Williams avalanche driver6:50 Manhattan Style board7:00 A real design in EasyEDA9:30 JLCPCB $2 PCB's Video Sponsor10:42 Assembled prototype Drivers11:28 High Voltage power supply11:55 Laser Safety12:04 Powering up the Laser12:35 Nanosecond pulses!13:13 Power Measurement14:47 Calculation15:18 Building a Laser Rangefinder!17:00 Fluorescent Dyes17:46 Future work18:11 Credits!
INSIDE A LASER! An Open Cavity Helium-Neon Laser! Les Lab 2024-07-01 | Episode 64#laser #electronicscreators Let's take a look at an awesome open resonator cavity He-Ne Laser!Tweak-able and hackable, you could fit your entire body inside the Laser cavity!I talk about the Brewster angle, and the technical specs of a NOS Brewster windowed Helium Neon Laser tube!Optical contacting is discussed, that is used to bond glass parts with no glue, but creates a permanent bond.I designed built a really cool mirror mount that can hold 6 Laser mirrors!I show how to do Quick and Easy Laser alignment, and demonstrate Transverse Electromagnetic Modes (TEM), as well as extend the cavity to around two feet! Brewster Laser tubes available from:ebay.com/itm/303507585770RP-Photonics Encyclopediarp-photonics.com/encyclopedia.htmlSam's Laser FAQ: Care and Feeding of the One-Brewster HeNe Laser Tuberepairfaq.org/sam/onebrewt.htmSam's Laser FAQ: Mirror Mountsrepairfaq.org/sam/laserclp.htm#clpmlmCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps the channel! 0:00 Intro0:08 Laser tubes1:04 Brewster Windows1:38 Brewster Laser Tube3:02 Optical Contacting3:28 Mirrors4:11 Tube mounting5:02 Mirrors5:33 An AWESOME mirror mount!7:37 Tube lit7:57 QUICK and EASY Laser Alignment9:25 First Light!9:55 Rotating the Mirrors!10:39 The output beam, beautiful modes!12:30 Half metre cavity!13:00 Smoke test13:19 Out
What happens when you reflect a Laser beam back on itself? Les Lab 2024-04-20 | Episode 63#laser #electronicscreators What happens when you reflect a Laser beam back on itself?This unusual Laser system from a Particle Counter does exactly that!Why?how does it work?Let's find out!Sams Laser FAQ The PMS/REO External Resonator Particle Counter HeNe Laser repairfaq.org/sam/laserhen.htm#henish7External Passive Cavity Laser patent:patents.google.com/patent/US4594715A/enPrevious teardown of the Laser Particle counter: https://m.youtube.com/watch?v=oUM1OD_WWgMCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps the channel! 0:00 Intro0:12 Helium Neon Lasers!0:53 Brewster Window Laser1:46 Unusual Particle Counter Laser2:44 Sam's Laser FAQ4:02 Patent External Stabilized Passive Cavity8:25 Laser Teardown9:05 Optical Bench Setup9:45 Laser Demo12:43 Credits
LASER Particle Counter TEARDOWN! Les Lab 2024-04-06 | Episode 62#laser #electronicscreators I bought a Vintage Laser Particle Counter from eBay for a tear down.This contains all sorts of juicy stuff, including a vintage Z80 computer system, and a Laser!This contains a very special Helium Neon Laser, that will be the topic of a follow up video, so don't forget to Subscribe!Link to Die Pictures Teledyne Philbrick TP1321https://www-richis--lab-de.translate.goog/Opamp80.htm?_x_tr_sl=de&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=wappCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps the channel! 0:00 Intro0:08 Laser Particle Counter Overview0:44 Front Panel1:55 Air inlet2:08 Back Panel, Particle Measuring Systems Inc2:51 Powering up 1987 vintage gear! 3:44 Cover off. Electronics Goldmine!4:45 Laser tube on!5:00 Acquisition board, ADC's PIO's5:42 CPU board, Z80 CPU, CTC, SIO EPROM's, RAM6:21 Amplifier board7:20 Air Management, Pumps, Filters, Valves 8:12 Printer Control Board9:08 Misc parts, Printer, Switches, LCD, BNC9:36 The Laser! Helium-Neon10:37 The Laser Cavity! Beautiful Laser Beams!11:00 Optics11:38 Exposed Laser Beam,cavity components, more beautiful beam shots!12:28 Super Bright Laser beams!
DANGEROUS Laser Power Supply Teardown! Les Lab 2024-03-17 | Episode 61#laser #electronicscreators I bought a Tattoo Laser power supply from eBay and this thing is, well, terrifying. I have never seen a commercial piece of equipment built as poorly as this! This seems to be built with the added feature that it can also remove the operator. Permanently.Still, lets tear it down, attempt a repair, and power the thing on!0:00 Intro0:16 Tattoo Laser Power Supply1:50 Inside the case, SMPS, faults, and high voltage power supply6:25 Switched Mode power Supply Board faults7:16 SMPS parts stripped8:00 New MOSFET, Resistors and SCR and repair8:31 Schematic of the Switched Mode Power Supply10:25 Power on smoke test11:29 Re-assembled power on12:29 Laser setup13:48 Full test15:30 An interesting failure mode17:19 Discussion of failure mode and Options19:22 TL431 shut regulator as an option20:05 Out
Shaking molecules until Laser Light comes out. DIY Raman Laser! Les Lab 2023-12-09 | Episode 60#Raman #LaserIn this episode, let's build a Raman Laser!First I talk about some of the background of light scattering, Rayleigh Scattering, Raman Scattering discovered by C.V Raman, then the discovery of the Raman Laser by Gisela Eckhardt.I cover the physical setup from an engineering standpoint.An old Nd:YAG Tattoo Laser I refurbished is used to pump a cuvette filled with a Raman Liquid.Although in the early experiments the megawatt Laser energy destroyed the cuvette I was using, I built a Raman cell from scratch, with replaceable windows.Do I manage to shift 532nm green light to 629nm Red? References:Physics openlab: physicsopenlab.org/2022/01/11/raman-spectroscopy-of-organic-and-inorganic-moleculesRaman Molecular bond stretching simulation: ir.cheminfo.orgStimulated Raman Scattering Video (Your Favourite TA): youtube.com/watch?v=sZEGMDZKyPQSRS: https://www.chem.uci.edu/~potma/RichardChemRev17.pdfEckhardt: https://research.science.mq.edu.au/diamond/Eckhardt_PhysWorld_Oct2015.pdf Crystalline Raman Lasers: https://research-management.mq.edu.au/ws/portalfiles/portal/62138763/Publisher+version+%28open+access%29.pdf%3C%3C"Simple" Raman Laser! psl.noaa.gov/outreach/education/science/ramanRaman Shift Calculator: photonetc.com/raman-shift-calculatorCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps the channel!0:00 Intro0:15 Light Scattering0:47 Rayleigh Scattering1:22 Raman Scattering2:26 Stimulated Raman Scattering SRS3:14 Raman Laser development4:19 Commercial Raman Lasers5:14 Raman Laser Explanation6:39 Intitial Experiment; Laser ate itself!7:16 Raman Laser build7:48 Raman Laser setup9:41 First Light!10:44 Measuring the wavelength11:39 Conclusions and future work
Little Junk Laser is a MEGAWATT Beast! Les Lab 2023-10-09 | Episode 59#photonics #LaserIn this episode, a sub $30 dollar junk tattoo laser is torn right down, repaired and re-assembled into a bench-top instrument.During the repair, theory is covered, as well as some practical alignment techniques. A home made, high voltage power supply is constructed for it, generating 100 Joules for the flash-lamp.The final Solid State Q-switched nanosecond Neodymium:YAG Laser has megawatt level peak powers, capable of vaporising materials, generating plasma in the air, and frequency doubling to green. Power measurement is done using a Joule Meter, a fast picosecond risetime photodiode, and an oscilloscope, with some very surprising results! Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps the channel!0:00 Intro0:43 Overview of the Laser3:24 Diagram and explanation the Laser5:11 Tear-down of the Cavity5:22 Extracting the Xenon Flash Lamp and Laser Rod5:52 Examining the Neodymium rod and Xenon Flash Lamp6:40 Corrosion and gunk8:07 All cleaned9:02 Replacing the mirror mount9:38 Mounting Base10:20 Finished assembly10:31 How to Align a Laser11:15 Safety First!11:43 Home made High voltage Power Supply13:57 Laser connected14:24 First Light and final alignment!15:54 Q-Switching!16:21 Laser induced breakdown16:30 Frequency doubling!16:43 Measuring the Laser Power17:24 Analysis of the Laser output pulse19:34 Pockels Cell19:42 Future experiments20:06 Credits
Controlling Light with High Voltage and Aniseed! The Kerr Effect! Les Lab 2023-09-03 | Episode 58#photonics #electro-optics#Kerr-effectIn this episode, let's control light with High Voltage and Aniseed using the Kerr Effect!Ordinarily, Kerr cells use a particularly nasty and deadly Liquid as the Kerr media. In this episode I investigate a possible safe alternative using Aniseed!After a little dive in to history including mechanical television and filming nuclear bomb detonations, we take a look at some kerr fluids, and dig up a reference to little known chemical derived from Aniseed! This chemical is responsible for the Ouzo effect in certain beverages, but also has a high AC Kerr constant!I build a nice Kerr cell from commonly available materials, cuvettes, polarizers, and scrap metal, as well as a nice high voltage porcelain insulator and demonstrate this effect.Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps the channel!Useful links related to the Kerr effect:A bit of history of the Kerr Effect.http://web.eng.gla.ac.uk/groups/opto/Kerr.htmlA Student experiment!https://lavfis.ifsc.usp.br/images/BDApostilas/ApEfKerr/The_Kerr_effect_in_nitrobenzene-a_student_experiment-AJP000888.pdfA list of AC (Laser induced) Kerr constants for a variety of liquids:nist.gov/system/files/documents/srd/jpcrd435.pdfAnethole: eBay item number 2040294638370:00 Intro0:11 Faraday Effect0:17 Kerr Effect1:37 Nitrobenzene3:24 List of AC Kerr Constants3:50 Aniseed!4:48 Kerr cells5:14 The Build5:52 High Voltage Power Supply9:05 The Experiment10:56 Summary
Thermal camera VS Carbon Dioxide Laser! Les Lab 2023-08-11 | Episode 57#thermalcamera #FLIR #carbondioxidelaserIn this episode I explore a CO2 laser with a thermal camera, and manage to break it!It looks like there is potential for some really awesome experiments with it though!Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps the channel!0:00 Intro0:08 Background0:57 Electromagnetic Spectrum1:16 Carbon Dioxide Lasers1:41 Experimental setup2:13 Synrad controller (Home Made!)2:48 CO2 Laser demo: Fire!3:26 Focused beam!3:58 Seeing an invisible beam of heat!4:51 Diffraction5:55 I damaged the thermal camera!6:38 Warning about thermal cameras!6:51 Potential experiments!7:16 Credits
Thermal camera on the Raspberry Pi! Topdon TC001 Product review! Les Lab 2023-07-08 | Episode 56#thermalcamera #FLIR #raspberrypi In this episode I review the TOPDON TC001 Thermal Camera. It can perform temperature readings accurate within 3.6℉ (2℃) or 2% of the object’s actual temperature, and display a clear thermal image with an ultra-high infrared resolution of 256x192 pixels. This works with Android devices and Windows, but even better, I wrote software so it can run on Linux and the Raspberry Pi!Product Link:amazon.co.uk/dp/B0BBRBMZ58Code Hosted on Github:github.com/leswright1977/PyThermalCameraEEVBlog Forum posts:eevblog.com/forum/thermal-imaging/infiray-and-their-p2-pro-discussion/200LeoDJ's Repo: github.com/LeoDJ/P2Pro-Viewer/tree/mainIf you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps the channel!0:00 Intro0:15 Unboxing2:16 Running the Thermal camera on Android5:59 Windows software review7:44 Linux/Raspberry Pi Software Repository and Features!10:52 Raspberry Pi Demo!13:13 Final thoughts13:33 Outro
Growing Laser Crystals used in NUCLEAR FUSION! Les Lab 2023-06-30 | Episode 55#optics #laser #nonlinearoptics#photonicsIn this episode, let’s look at growing non-linear crystals that can convert Laser Light into different colours, using a process called second harmonic generation. The crystals we will be looking at are the same crystals used in the National Ignition Facility, a Laser driven Nuclear Fusion experiment!Here is a superb paper on the National Ignition facility (takes time to load!):osti.gov/pages/servlets/purl/1256427youtube.com/@LivermoreLab1064 laser module： http://bit.ly/3ZTLKeZCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps the channel!In this episode, let’s look at growing non-linear crystals that can convert Laser Light into different colours, using a process called second harmonic generation. The crystals we will be looking at are the same crystals used in the National Ignition Facility, a Laser driven Nuclear Fusion experiment!Although non-linear crystals can be prohibitively expensive to manufacture, considerable research has been conducted into growing them at large scale and inexpensively, especially for large systems. One such system, is the national ignition facility. This is a laser-based inertial confinement fusion research device, located at Lawrence Livermore National Laboratory in the United States. It is the largest and most complex Laser system in existence, with over 7,500 meter-sized optics, and 26,000 smaller ones. The facility itself takes up the space of 3 football fields and can deliver up to 2 Million Joules of ultraviolet light and 500 terawatts of peak power into a fusion target the size of a pencil eraser called a Hohlraum. This generates the extreme pressures and temperatures necessary to achieve nuclear fusion. It achieved the first instance of scientific breakeven controlled fusion in an experiment on December 5, 2022, with an energy gain factor of 1.5 (Note, this does not factor in actual power consumption of the facility, an important omission bythe popular press! Nonetheless a huge achievement! 1064 laser module： http://bit.ly/3ZTLKeZCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps the channel!0:00 Intro0:18 Second Harmonic Generation0:43 Discovery of SHG1:17 Expensive Exotic Materials1:37 Research and the National Ignition facility3:15 Potassium Di-Hydrogen Phosphate (KDP)4:03 Growing KDP at home!6:07 YAG Laser setup6:57 Generating Green light from Infrared8:21 Thanks to channel Supporters.
WEIRD Fluorescence Two-Photon absorption! Les Lab 2023-06-02 | Episode 54#optics #laser #nonlinearopticsLets take a look at Two-photon absorptionIn this episode, let's look at a really unusual Fluorescence phenomenon, two photon absorption!This phenomenon is used in two photon microscopy for imaging cells buried deep in living tissue, and could be used in volumetric 3D displays and ultra dense data storage!This was originally predicted by Maria Goeppert-Mayer in 1931 in her doctoral dissertation. Thirty years later, the invention of the laser permitted the first experimental verification of TPA.Maria went on to become the second woman to win a Nobel Prize in physics for proposing the nuclear shell model of the atomic nucleus.The unit for the two-photon absorption cross section is named the Goeppert Mayer (GM) unit after her.1064 laser module： http://bit.ly/3ZTLKeZCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps the channel!0:00 Intro0:18 Fluorescence1:06 Maria Goeppert Mayer Two-photon absorption1:42 Two-photon absorption explanation, Jablonski diagrams2:43 Suitable Fluorescent Dyes2:48 Rhodamine 6G3:18 Single photon fluorescence4:45 15kW IR Laser!5.45 Extreme power density6:00 Two Photon fluorescence!6:58 Sneak peak and credits!
Second Harmonic Generation in a 15 Kilowatt Laser! Les Lab 2023-04-29 | Episode 53#optics #laser #nonlinearopticsLet's measure the Twotrees 1064nm Laser Head, and investigate non-linear second harmonic generation, converting this IR Laser to Green!1064 laser module： http://bit.ly/3ZTLKeZCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!In this video I explain how the TwoTrees 1064nm Infrared Laser works. This is a Diode Pumped Q-Switched Laser Nd YAG Laser, with a claimed peak output power of 15 Kilowatts!Internally a Neodymium YAG rod is pumped by an 808nm Laser diode, and this a q-switched by means of a Cr:YAG saturable absorber, resulting in a nanosecond Laser with high peak powers. I measure the output with a Gentec Pyroelectric sensor and a Fast photodiode from Thorlabs.In the second half o the video I explain Second Harmonic Generation (SHG) works. This is the process that is used in a green Laser pointer, and demonstrate this with a Potassium Titanyl Phosphate (KTP) nonlinear crystal generating a 532nm Green Laser Light! Of course everyone loves an obligatory Laser beam shot!0:00 Intro0:13 Laser description0:58 How a Diode pumped Q-Switched Solid State Laser works!2:47 Measurement setup5:21 Measuring Pulse Width7:19 Measuring Pulse Energy7:46 Calculator8:42 Collimating the beam9:48 How Green DPSS Lasers Work11:38 Second harmonic Generation Demonstration12:04 Beautiful Green Beams!13:48 Outro and Credits
Laser Engraver review TwoTrees TS2 20W and 1064nm Laser Head Les Lab 2023-03-21 | Episode 52A Product review of the Twotrees TS2 Laser engraver!This has a huge bed size, z-axis control, and a massive 20W Laser head!More interestingly, Laser manufacturers have been offering 1064nm Laser heads as well, that can engrave all metals! (but I have other plans for it :-) so subscribe!)If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donating directly: paypal.me/leslaboratoryTS2 10W:http://bit.ly/3yR2jw2$50 discount code: AFF50TS2 20W:link: http://bit.ly/42zw95V$50 discount code: AFF501064 laser module： http://bit.ly/3ZTLKeZ
Digital Microscope Review Andonstar AD249S-M Les Lab 2023-03-04 | Episode 51#microscope I was asked to do a review of the Andonstar AD249S-M Digital Microscope.Lately I have been needing glasses for close up work, so why not?!Several use cases are tested, including a nice shot of some alluvial Scottish Gold!Amazon-US: amzn.to/3OGy6FtAmazon-UK: amzn.to/3AjyN2DCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!0:00 Intro1:12 Unboxing3:12 USB Adaptors4:04 First look4:44 SMD devices under the microscope ESP325:22 Miniature optical components5:10 EPROMS under the microscope8:05 Microscope slides9:03 Alluvial Gold!9:54 External HDMI10:33 Summary and critical review12:01 Outro
Hacking a Tektronix Oscilloscope to1GHz! Les Lab 2023-02-26 | Episode 50#tektronix#1ghz#hack Lately I have run out of bandwidth, trying to measure signals from pulsed Lasers. My fastest oscilloscope was a hacked DS1054z at 100MHz, nowhere near fast enough to measure nanosecond pulses.I picked up a Tektronix TDS754C from eBay. This scope has a beautiful CRT display, and is already a decent scope, but bought it with the sole purpose of hacking it to 1GHz, and whilst I am at it, increasing the memory ;-)These hacks are pretty straightforward and effectively turn a TDS754C into a TDS784C, though there is a trap with rise-time measurement...If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!1GHz upgrade hack presented here based on information from the EEVBlog:eevblog.com/forum/testgear/conversion-of-500mhz-tds744a-to-1ghz-tds784aFast risetime generatorhttp://www.leobodnar.com/shop/index.php?main_page=product_info&products_id=295Tektronix CONSOLE PORT TDS 5/6/7xx Oscilloscope Debug Card RS-232 for Opt. 013ebay.co.uk/itm/325522798085ebay.co.uk/usr/maurit00Tek Forums console port debug commands:forum.tek.com/viewtopic.php?t=138100EEVBlog Forums console port debug commands:eevblog.com/forum/testgear/hackingupgrading-old-scope-(tds754d)Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider donating: paypal.me/leslaboratory0:00 Intro0:12 Overview3:20 Risetime measurement with Aliexpress fast pulse generator4:57 Processor board6:33 Acquisition board8:09 1GHz Hack8:40 Risetime measurement FAIL!9:59 Risetime measurement PASS! 11:48 Extending record length hack15:47 Reboot!17:53 Summary18:50 Outro18:58 Credits!
Supercontinnum in Multimode Fiber Teaser Les Lab 2023-01-12 | Episode 48This is a short teaser trailer of where this project goes next!Tempted to call it: Supercontinuum, bigger brighter and uncut!Multimode Fiber (50/125) can generate extremely bright continuum, because of excellent coupling efficiency.Nonlinear effects abound here, and the fiber even exhibits mode cleaning! This is bright enough to film in daylight, and so obligatory smoke shots abound!I am planning on making this more in-depth than the last, so comment below how long it should be:10 minutes15 minutes25 minutesAlso, is there an appetite for short videos at all (Odd bits that I might not consider doing a full video on, 2 minute teardowns, that kind of stuff)?Please Subscribe and Share on social media!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!
DIY SUPERCONTINUUM LASER on a BUDGET!! Les Lab 2022-12-29 | Episode 47#supercontinuum#photonics#whitelightlaser#laserCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!The Ultimate White Light Laser! DIY Supercontinuum Laser.In this episode I discuss Supercontinuum Lasers, the ultimate white light Laser! Normally such lasers cost thousands of dollars and use photonic crystal fiber, but later on, I show how to construct one from a practical standpoint, on a super tight budget using plain old telecoms fiber!Nitrogen Laser used in this video:youtu.be/0MvXXwAizrMyoutu.be/ngs9zPdI_t0Dye Laser used in this video:youtu.be/-ny_-Y1MpRYInformation on Supercontinuum generation: rp-photonics.com/supercontinuum_generation.htmlSupercontinuum Academic paper:Lin, Chinlon; Stolen, R. H. (1976-02-15). "New nanosecond continuum for excited‐state spectroscopy". Applied Physics Letters. AIP Publishing. 28 (4): 216–218. doi:10.1063/1.88702. ISSN 0003-6951.0:00 Intro0:12 Introduction to Supercontinuum1:37 Supercontinuum kits3:01 Review of an academic paper6:17 Overview of a home made supercontinuum laser8:13 Dye Laser9:14 Supercontinuum generation10:27 Dispersing the Supercontinuum with a prism!11:37 Outro
Coupling Laser beams into Fiber Optic Cable! Les Lab 2022-12-03 | Episode 46#fiberoptics #fibercoupling#laserCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!In this video I demonstrate how to couple Lasers into Fiber Optic cable quickly and easily using a fiber visual fault locator, some mirrors and some DIY fiber collimators.I also couple light into Multimode and Singlemode fiber, and demonstrate what happens when you exceed a fiber's bend-radius. Fiber optics is far more interesting than just telecoms, there a variety of unusual applications including high voltage sensing , temperature measurement and more!I have a couple of way interesting projects in the pipeline exploring cool stff with fiber optics, so subscribe!0:00 Intro0:08 Fiber optic cables2:06 Fiber Colimator3:14 Coupling Light DIY Fiber couplers and Collimators5:54 Visual Fault Locator7:51 Coupling a Laser into a Fiber Optic11:55 Coupling into single mode cable13:00 Fiber Bend Radius13:46 Outro and credits
DIY Raspberry Pi Spectrometer NEW SOFTWARE! Les Lab 2022-10-22 | Episode 45#spectroscope#spectrometer #raspberrypi Code at the end of the Description! Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!In this video I demonstrate the latest and greatest software for the home-made Raspberry Pi Spectrometer with al new features! If you already have a Raspberry Pi, this useful tool can be built for under 100 bucks!The new software features:Accuracy has been significantly improved by implementing multi-wavelength calibration and a Polynomial regression data fit to compute wavelengths as precisely as possible across the measured range.Full screen spectrometer display! On Raspberry Pi systems, the interface is designed to fit 800 x 480 screens, which seem to be a common resolution for RPi LCD's, paving the way for the creation of a stand alone benchtop instrument. (for example the HyperPixel 4.0, etc)Waterfall display from measuring spectra changes over timeThis uses readily available components and easy to use Python software I have written specially for this application.A commercial Diffraction grating Spectroscope patonhawksley.com/product-page/benchtop-spectroscopeOriginal PySectrometer: youtu.be/T_goVwwxKE4Nitrogen Laser repair: youtu.be/0MvXXwAizrMHome made Dye Laser: youtu.be/-ny_-Y1MpRYUlbricht Sphere: youtu.be/BtMqx5P74n4All code for this video and the bill of materials, as well as additional information is available at my GitHub.github.com/leswright1977/PySpectrometer2#raspberrypi#optics#laser 0:00 Intro0:16 Hardware1:41 Software Repo Github2:33 New Features!6:20 Where to buy parts7:45 Quick test9:30 New Software Demo!9:49 Calibration14:38 Waterfall mode15:36 Test with a Dye Laser!18:19 Self contained unit with screen!19:16 Outro19:26 Channel supporter credits
CO2 Laser Upgrades! Part 2 Les Lab 2022-09-18 | Episode 44#LaserCutterUpgrades #K40LaserRebuild #DIYLaserEngravingThis video is a followup detailing the repair and refurbishment of a Chinese K40 style 50W CO2 Laser cutter I picked up for just 60 bucks!In this video I show 3 must have upgrades for a Chinese CO2 Laser cutter, a new cutting head with air assist, a current meter, and a review of the Minigerbil 3 from Awesome.tech and its use with LightBurn softwareBuy the Mini Gerbil V3 from:https://awesome.tech/product/mg3-mini-gerbil-v3-2-axis-controller-for-k40-laser/The air assist head came from ebay(no affiliation) ebay.co.uk/itm/223452043473The milliameter is any suitable 0-30mA analog meter. Check your tube specifications for maximum allowable current.If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!0:00 Intro0:22 Refurbishment0:40 Air assist cutting head Upgrade1:30 Old controller (Leetro)2:14 Milliammeter Upgrade3:10 Internals gutted4:10 Mini Gerbil v3 controller board7:43 Blinkenlights8:17 LightBurn software8:47 Engraving and cutting job10:12 Complex cutting job12:55 Summary13:16 Outro13:25 Channel Supporter Credits
Repairing a K50 CO2 Laser Cutter. Part 1 Les Lab 2022-08-14 | Episode 43#LaserCutterRestoration #K40LaserRebuild #DIYLaserProjectsThis video is the first in a short series detailing the repair and refurbishment of a Chinese K40 style 50W CO2 Laser cutter I picked up for just 60 bucks!Is it going to be worth it?What should I replace the controller with? A Mini Gerbil or a Cohesion3d?Should I convert the old tube to a flowing gas CO2 Laser? Comment down below!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!0:00 Intro0:10 Overview0:30 Broken CO2 Laser tube1:46 Overview of the CO2 Laser Cutting machine2:24 Electronics (PSU & Controllers)4:03 Laser bed5:49 Laser controller6:18 first light6:42 Test wood engraving7:08 Beam profiling the Laser8:45 50W CO2 Laser tube overview!10:08 Summary10:51 Outro11:00 Credits! Thanks to all who have supported this Channel!
xTool D1 Pro Review and first project Les Lab 2022-08-03 | Episode 42#laserengraving #lasercuttingmachine Referral link: xtool.com/?ref=Lmz9rxv6&utm_medium=5306&utm_source=influencerIf you want to buy one of these, please use these affiliate links:20W xTool D1 Pro: xtool.com/collections/machine/products/xtool-d1-pro-20w-higher-accuracy-diode-diy-laser-engraving-cutting-machine?ref=Lmz9rxv6&utm_source=influencer10W xTool D1 Pro: xtool.com/collections/machine/products/xtool-d1-pro-10w-higher-accuracy-diode-diy-laser-engraving-cutting-machine?ref=Lmz9rxv6&utm_source=influencer5W xTool D1 Pro: xtool.com/collections/machine/products/xtool-d1-pro-5w-higher-accuracy-diode-diy-laser-engraving-cutting-machine?ref=Lmz9rxv6&utm_source=influencerIn this episode I review the xTool D1 Pro and demonstrate how to do your first mini project! I don't often do reviews, but my inbox was filling up with companies asking me to review these, so I had something of a choice. Was it a good one? Watch to find out!I personally am interested in engraving panels for my electronics projects.If there is interest in future engraving projects, please leave a comment below!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratorySoftware link: xtool.com/pages/software0:00 Intro0:21 Unboxing5:46 10 Watt Laser7:44 Software: xTool Creative Space8:40 A simple first project!12:09 Cutting and Engraving Wood!14:43 Engraving slate15:36 Summary16:05 Outro
CO2 Laser Engraver. Industrial Laser Coder Hacked! Part 2! Les Lab 2022-07-13 | Episode 41$2 for 1-4 layer PCBs ;PCB assembly from $0 : jlcpcb.com/DYE#linuxcnc#laserengraving #GCodeIn this video I have rebuilt a Domino D100+ Industrial Laser Coder/ marking head, and demonstrate some code to get it to do some engraving!This Laser uses the XY2-100 Protocol to drive the Galvos and modulate the Laser, so software and hardware is needed to get this to work.This Uses the awesome OpenGalvo OPAL library written by Daniel Olsson, and a PCB designed by me, to send standard Gcode which is then translated into XY2-100.This combination is suitable for driving other Galvo Scan heads such as the Sino-Galvo SG7110.F-engrave from the Linux CNC project is demonstrated to turn an image in to suitable G-Code for the machine.I engrave a few types of materials with it including Wood, Perspex and glass!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!Links!:Previous tear-down video: youtube.com/watch?v=_i1J7TGpPnQOpenGalvo (OPAL) Library:github.com/opengalvo/OPALReddit Thread:reddit.com/r/OpenGalvoDEMO Laser Marking - OpenGalvo - OPAL Firmware and Sino Galvo SG7110 Teensy 4.0 Slow: youtu.be/uMT-sZhYKJo Fast: youtu.be/m6PLiacBdwsPCB Gerber files:github.com/leswright1977/OPAL_PCB0:00 Intro0:09 Galvo XY2-100 Pinout (Sino Galvo)0:38 XY2-100 Protocol1:26 OpenGalvo OPAL Project4:54 Schematic and PCB Design6:44 Finished PCB7:33 Rebuilt CO2 Laser coder7:57 Engraver setup8:26 First light8:53 Convert image to G-Code (F-Engrave)10:33 Wood engraving10:58 Perspex engraving11:51 Glass engraving12:32 Will it Crash & Burn??13:41 Results14:25 Out!
Industrial CO2 Laser Coder TEARDOWN and repair! Part 1! Les Lab 2022-06-10 | Episode 40#laser #laserengraving #electronics In this video I tear down a Domino D100+ Industrial Laser Coder!It has a high speed Galvo Scan head complete with all the amplifiers the drivers and Silicon mirrors, and beautiful Zinc Selenide (ZnSe) F-Theta lens. There is also a II-VI ZnSe Collimating lens and of course a 15W Synrad Carbon Dioxide Laser, with an unusual wavelength of 9.3 microns!Is it all scrap, or can it be brought to life? Watch till the end to find out!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!Helium Soak for Laser tubes:repairfaq.org/sam/laserhtr.htm#htrtrr1aSynrad Metal Laser tube Patent:patents.google.com/patent/US4805182A/enSynrad 48 Series User Manual (Includes Schematics!):https://isurplus.com.au/manuals/Synrad%2048%20Series%20User%20Manual.pdfXY2-100 Library for Teensy 3.2:github.com/Tuet/XY2_100OpenGalvo (OPAL) Library:github.com/opengalvo/OPALCO2 Laser Beam Expanders/Collimators:ii-vi.com/product/beam-expanders0:00 Intro0:08 Domino 100+ Laser Marking head Overview0:59 Harting Industrial Connector1:36 Laser Scan Head 2:39 ZnSe F-Theta Lens & Galvo's4:06 Galvo Driver / Amplifier Boards4:46 Laser Head Teardown Synrad CO2 Laser & Collimating Lens11:02 Synrad CO2 Laser teardown14:00 Helium Soak and Laser repair and mystery fault19:00 Laser scan head hacking XY2-10021:02 Summary of parts recovered and Collimating Lens
High Power Laser Diode Power Supply 10W and Laser Safety Les Lab 2022-05-11 | Episode 39#laser #electronics $2 for 1-4 layer PCBs ;PCB assembly from $0 : jlcpcb.com/DYEI this episode I demonstrate a home made 10W Laser Diode Driver. As this is a Class 4 Laser, there is discussion on how to design, build and run such a Laser safely! Of course there is the inevitable burning and Smoke test, so watch until the end!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!Box Optronics Laser diodes: boxoptronics.comThorLabs Laser safety Glasses: thorlabs.com/newgrouppage9.cfm?objectgroup_ID=762Kentek Laser Safety eyewear: kenteklaserstore.com/products/eyewear/laser-safety-eyewearKentek Optical density Calculator: lasersafetyu.kentek.com/easy-haz-laser-hazard-software-basic-web-versionMPE Graphs: bangor.ac.uk/hss/inflink/lasercalculators.php.en0:00 Intro0:38 Laser diode Catalog1:15 Laser Diode Overview2:03 Laser Diode Datasheet2:59 Laser Diode Driver Schematic4:13 PCB Layout4:43 3D Model5:25 Power supply overview8:02 British Standards Safety of Laser Products9:33 Laser Safety Glasses12:50 Laser Demonstration and Smoke test#burninglaser#lasersafety
How to make a Triggered Spark Gap for High Voltage Lasers and Marx Generators Les Lab 2022-03-12 | Episode 38#highvoltage #laser As "dougc314" and "what else is on" noted, at 10:40 there is an error in my Schematic! This should be a 2N3906 not a 2N3904.The RC differentiator (11:15, thanks "GermanMythbuster" for pointing that out!) is missing values on the Schematic The cap should be 22nf, and the resistor is 4k7.Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,share,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!In this video, a home-made Triggered Spark Gap is demonstrated, along with the power supply schematics.This was designed primarily for my nitrogen laser, but can be used in Marx Generators, Tesla coils, or anywhere you need high voltage triggered switch!Original Nitrogen Laser video: youtu.be/pCnXftuJ9ZoNitrogen Laser teardown: youtu.be/AyN1o_3XaTwLaser capacitors: youtu.be/8wUxYVe98Uo#triggeredsparkgap#highvoltage#Laser
Home Made Integrating or Ulbricht Sphere Les Lab 2022-02-05 | Episode 37#laser #optics Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,share,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!In this video, a home-made Ulbricht or integrating sphere is explained and demonstrated!Papers Cited:A Mixture of Barium Sulfate and White Paint is a Low-Cost SubstituteReflectance Standard for Spectralonhttps://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1010&context=cpl_techniquesinstrumentsLow cost 3D-printing used in an undergraduate projectpure.aber.ac.uk/ws/files/9565512/Tomes_EJP_preprint.pdfUltrawhite BaSO4 Paints and Films for Remarkable Daytime Subambient Radiative Coolingpubs.acs.org/doi/10.1021/acsami.1c02368Nitrogen Laser Rebuild Videos:youtu.be/0MvXXwAizrMyoutu.be/ngs9zPdI_t0Dye Laser Teardown:youtu.be/ERNVgGmjALYRaspberry Pi Spectrometer Video:youtu.be/T_goVwwxKE4#Laser#Optics#NitrogenLaser#DyeLaser#UlbrichtSphere#IntegratingSphere
RGB Dye Laser? How Dye Lasers Work: Viewer Questions Les Lab 2021-12-17 | Episode 36#laser #optics Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,share,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!Viewer questions!Some people had questions on Dye Lasers:Is it possible to mix Dyes in the same cuvette?jonsinger.org/jossresearch/tjiirrs/014.htmlHow is it that focusing a Nitrogen laser into a Line evern sets up lasing in the first place?#Laser#NitrogenLaser#DyeLaser#optics
Dumpster Laser rebuilt and modded! Les Lab 2021-10-31 | Episode 35#laser #electronicscreators #optics Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,share,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!Dumpster Nitrogen Laser Part 2 It Lives!I bought a couple of MNL-100 Nitrogen lasers that were listed as "Pulled form a working environment" but we ll know that means "Pulled from a Dumpster"!These are of course non working, and in very poor physical condition.This is the followup video on the rebuild. I describe the new controller, overclock the Laser, and drive some Dye Lasers with it!#Laser#OverclockedLaser#NitrogenLaser#DyeLaser#optics
Raspberry Pi Zero 2 W Spectrometer! Les Lab 2021-10-31 | Episode 34#raspberrypi A short video on the newly released Pi Zero 2 W!Will it run my PySpectrometer software?For a good breakdown of the capabilities of the new Pi Zero W, see "Explaining Computers" video here: youtube.com/watch?v=Qxcyb5z2HDMCode at the end of the Description! Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!This is a follow up video to Episode #20 where I built an inexpensive Raspberry Pi Spectrometer: youtu.be/T_goVwwxKE4For the Miniature Spectrometer see Episode #27: youtu.be/Tw3HJEhE2dIThis uses readily available components and easy to use Python software I have written specially for this application.All code for this video as well as additional information is available at my GitHub:github.com/leswright1977/PySpectrometer#RaspberryPiZero #PiZero2W#Spectrometer#optics
Hackaday Prize Entry 2021 Raspberry Pi Spectrometer #HackadayPrize Les Lab 2021-10-19 | #HackadayPrize Entry video#2021HackadayPrizeEpisode 33This is my entry for the 2021 Hackaday Prize, there is a lot of good competition out there, but I am pleased to have made it to the finals!For more information on this project, please visit:hackaday.io/project/181144-raspberry-pi-spectrometergithub.com/leswright1977Detailed video:youtube.com/watch?v=T_goVwwxKE4Software Update:youtube.com/watch?v=dm3woVQp8XcMiniature version:youtube.com/watch?v=Tw3HJEhE2dICheck out my other videos: youtube.com/leslaboratoryIf you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!
Can it be repaired? Dumpster Nitrogen Laser teardown Part 1 Les Lab 2021-10-02 | Episode 32#laser #electronicscreators #optics Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,share,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!I bought a couple of MNL-100 Nitrogen lasers that were listed as "Pulled form a working environment" but we ll know that means "Pulled from a Dumpster"!These are of course non working, and in very poor physical condition, so I do a very in depth tear down on one, right down to the guts.Later I rebuild it, and hack on a good old fashioned Spark Gap switch to see if I can get some output.This will be a two part video. Later I will build my own control electronics, and graft in a triggered spark gap. Stay Tuned!https://www.ltb-berlin.de/en/products/lasers/mnl-100/Link to Manuals: http://www.ltb-berlin.de/en/company/downloads/Relevant patent:patentimages.storage.googleapis.com/a6/c7/da/0abd64a49c006f/US5875207.pdf***Video Contents***00:00 - Intro00:18 - Nitrogen Laser overview00:52 - Teardown01:57 - Control Board description05:54 - High Voltage Power Supply07:30 - Pre-Ionizer board08:45 - High Voltage IGBT switch13:39 - Laser Energy Sensor16:53 - Laser Tube23:33 - Preionizer powerd up24:28 - Oscilloscope Measurement26:14 - High voltage power supply hacked29:01 - Replacing the IGBT switch with a spark gap31:13 - First Light! Powering up the Laser!32:00 - Measurement of RF Noise32:35 - Further improvements for the Laser. Commercial spark gaps and control electronics.33:20 - Outro#Laser#Teardown#SparkGap#Dumpsterhack#electreonics#optics
Homemade Acousto-optic controller for Under $100! Les Lab 2021-09-06 | Episode 31#DIYLaserControl #LaserModulation #AcoustoOpticTechnologyAOTF AOM PCAOM Controller for Under $100!In this episode I take a look at an Acousto-optic Tunable Filter!This device allows us to modulate or pick a wavelength from a multiline Laser using very high frequency sound waves, that are coupled into a crystal using a Piezoelecric transducer.Since this did not come with a controller, I show you how to build a controller for these devices for under 100 bucks, using an inexpensive Voltage controlled Oscillator (VCO) and an RF Amplifier!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!Wiki Article: en.wikipedia.org/wiki/Acousto-opticsData Sheet: https://www.laserland.de/tl_files/content/shop/show_equipment/Crystall/aa-aotf.pdfSchaefer-Bergmann diffraction pattern: ieeexplore.ieee.org/document/1076617?arnumber=1076617BOM:70-200MHz VCO RF Signal Source Voltage Controlled Oscillator Signal Generator :ebay.co.uk/itm/2542827627042MHZ-700MHZ 3W HF VHF UHF FM Transmitter RF Power Amplifier Module For Ham Radio:ebay.co.uk/itm/334032510798LM317 DC Linear Regulator module:ebay.co.uk/itm/254992672747...and a well stocked parts bin ;-)See also: youtube.com/watch?v=yoK4_UN7dA8#Laser #acoustooptics #optics
Bayer filter removal on a Pi Camera: Laser stripping, CFA removal, debayering, and UV conversion. Les Lab 2021-08-07 | Episode 30#laser #raspberrypi In this episode I discuss methods of stripping the Bayer Color Filter Array (CFA) from the Raspberry picamera, for use in my Raspberry Pi Spectrometer: youtu.be/T_goVwwxKE4I cover physical removal, chemical removal with EKC 830 and Laser stripping.I demo an experimental home made Laser stripping machine, like a miniature CNC, using the MNL-100 Nitrogen Laser I tore down and hacked here: youtu.be/k5MOAKHPVG8Does it work? Can you use the Picamera to image in the Ultraviolet? Watch the video to find out!Thanks to the people who nudged me a little (White Shadow (see comments), colleagues and friends) I published this work in the IEEE: doi.org/10.1109/lsens.2022.3231931If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!References:Ultraviolet Imaging with Low Cost Smartphone Sensors: Development and Application of a Raspberry Pi-Based UV CameraThomas C. Wilkes , Andrew J. S. McGonigle , Tom D. Pering , Angus J. Taggart ,Benjamin S. White, Robert G. Bryant and Jon R. Willmott doi.org/10.3390/s16101649mdpi.com/1424-8220/16/10/1649/htmExcimer laser photoresist strippingMenachem Genut, Ofer Tehar-Zahav, Eli Iskevitch, Boris LivshitsProceedings Volume 2724, Advances in Resist Technology and Processing XIII; (1996) doi.org/10.1117/12.241858Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider donating: paypal.me/leslaboratoryMusic in this video:8-Bit March by Twin Musicom is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0Artist: http://www.twinmusicom.org#Laser#BayerFilter#RaspberryPi#electronics#optics
Yellow DPSS Laser with Analog Modulation for under $100!! Unboxing, Review & Measurement. Les Lab 2021-07-15 | Episode 29#laser In this episode I unbox and review another sub $100 Yellow Laser, this time from Australia!Claimed specs are: 560nm (Yellow-Green) @ 15-20mWAnalog Modulation!I put it through it's paces, testing with the Raspberry Pi 4 Spectrometer, measure with a Coherent LaserCheck, and try out the modulation feature.These modules can be purchased from:LaserLandAustraliahttps://laserland.com.au/ info@laserlandaustralia.com+61 421 165 215Scanning Mirror: youtu.be/Em6pVB7z9lARaspberry Pi Spectrometer: youtu.be/T_goVwwxKE4Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!If you found this content useful, and would like to support this Channel, please consider donating: paypal.me/leslaboratory#YellowLaser#Laser#optics
Supermarket Barcode Scanner Teardown and hack! Les Lab 2021-07-03 | Episode 28#laser In this episode, I tear down a supermarket checkout onmidirectional barcode scanner, talk about the optics and electronics, and discover an easter egg!Later in the video, I hack in a DPSS Laser, rebuild it and power it up, so keep watching until the end to see the barcode scanner from hell!Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!#Laser
How to build a MINIATURE Spectrometer for the Raspberry Pi Les Lab 2021-06-20 | Episode 27#spectrometer #raspberrypi Code at the end of the Description! Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!This is a follow up video to Episode #20 where I built an inexpensive Raspberry Pi Spectrometer: youtu.be/T_goVwwxKE4In answer to comments about miniaturizing this, I build a tiny lightweight Spectrometer, suitable for adding into smaller projects such as Tricorder projects, or maybe even mounting on a Drone.As an aside, I also look at the spectra from some Different lamps (as well as Ultraviolet) , including: Fluorescent, Mercury vapor,, Xenon, and Deuterium!The pocket spectroscope used in this build, was a kind donation from Paton Hawksey: patonhawksley.com/product-page/pocket-spectroscope.This uses readily available components and easy to use Python software I have written specially for this application.All code for this video as well as additional information is available at my GitHub:github.com/leswright1977/PySpectrometer#RaspberryPi#Spectrometer
Laser Barcode Scanner Teardown How to hack it into Laser Light Show! Les Lab 2021-06-15 | Episode 26#laser Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like, subscribe and comment for more great content!In this video, I tear down a Metrologic Laser Barcode scanner that you might see used in supermarkets and warehouses.I talk about some of the components on the circuit board. I extract the scanner mirror and shine a 50mW 532nm Laser at it through smoke in a can, to give a simple, but really cool Liquid smoke effect, that looks awesome! Everybody loves Laser beams!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!
He-Ne Lasers! Green Laser, Yellow Laser, Red Laser & Dual Wavelength He-Ne Laser! Les Lab 2021-06-07 | Episode 25Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!In this video, I demonstrate colored Helium-Neon Lasers! The first 3 are manufactured by Lasos, with the following specs:A red Laser 632.8nm 11mWA Yellow/Amber Laser 594nm 2.2mWA Green Laser 543nm 1.16mWLater on, I force a vintage green Helium Neon Laser to generate 2 wavelengths simultaneously!The Yellow Laser was bought from Mike at mikeselectricstuff, check out his videos here: youtube.com/channel/UCcs0ZkP_as4PpHDhFcmCHyAThe Laser itself featured in this awesome video: youtube.com/watch?v=9urV1Gq7rBkIf you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!#laser#optics
Raspberry Pi Pico display fonts in MicroPython How to design fonts for your pi pico project Les Lab 2021-05-30 | Episode 24#raspberrypi #raspberryPiPico#PythonCheck out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!In this video, how to create fonts in Python for the Raspberry Pi Pico Display from Pimoroni: shop.pimoroni.com/products/pico-display-packThis little display is way cool, but the font built into the firmware is not the best. This is an easy to use Python implementation of a 5x7 ASCII font and associated helper functions and includes a section on how to make custom fonts with a tool.(This is useful if you want to design your own fonts, just click the cells to toggle the pixels, and it spits out binary and hex data :-) Check it out!)All code is hosted at my Github and is free and open source: github.com/leswright1977/picofontIf you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!
Yellow DPSS Laser for under $100?! Unboxing, Review & Measurement with a Raspberry Pi Spectrometer Les Lab 2021-05-23 | Episode 23#laser #optics #electronics Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!In this episode I unbox and review a Yellow Laser from China!Alleged specs are: 574nm (Yellow) @ 8mWThanks to Mathias for the tip!I put it through it's paces, testing with the Raspberry Pi 4 Spectrometer, and measure with a Coherent LaserCheckIs it for real, or is it Junk? Watch to the end and find out!lasence.en.alibaba.com
How to measure Dye Laser Tuning curves with a DIY Raspberry Pi Spectrometer. Les Lab 2021-05-16 | Episode 22#laser #spectrometer Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!In this video I demonstrate how to measure the tuning curves of a Home Made Dye Laser with my DIY Raspberry Pi Spectrometer! I Use 4 Dyes: Coumarin-1, Sodium Fluorescein, Rhodamine 6G.See the PySpectrometer build at: youtu.be/T_goVwwxKE4Code and BOM for the Raspberry Pi 4 Spectrometer: github.com/leswright1977/PySpectrometerCheck out the Dye Laser video here, with some fantastic beam shots!: youtu.be/-ny_-Y1MpRYThe Optical Breadboard was purchased from: thorlabs.com/thorproduct.cfm?partnumber=MB3045/M
How to build a DIY Raspberry Pi Spectrometer. Part 2, Software update and discussion on code Les Lab 2021-05-03 | Episode 21#raspberrypi #spectrometer Code at the end of the Description! Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!Following on from the previous video, and the comments, Version 3 is now released. It has Peak hold added for pulsed applications, and can now export CSV dataAll code for this video and the bill of materials, as well as additional information is available at my GitHub:github.com/leswright1977/PySpectrometer
How to build a DIY Raspberry Pi Spectrometer using a Picamera and Spectroscope. Les Lab 2021-04-17 | Episode 20#raspberrypi #spectrometer Code at the end of the Description! Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!In this video I demonstrate a home-made Raspberry Pi Spectrometer for measuring the wavelength of light! If you already have a Raspberry Pi, this useful tool can be built for under 100 bucks!This uses readily available components and easy to use Python software I have written specially for this application.All code for this video and the bill of materials, as well as additional information is available at my GitHub:github.com/leswright1977/PySpectrometer
Pulsed Laser Power measurement with Energy Sensors! Les Lab 2021-03-14 | Episode 19#laser #electronics #measurement CODE at the end of the Description! Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like and subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!Time for some Science! In this video, I measure the power output of my home made Nitrogen Lasers using Gentec Pyroelectric Energy Sensors!Spoiler alert, I debut my largest home made TEA Nitrogen in this episode as well. What is its peak power? Watch the video to find out!Gentec Catalog with how to perform measurements (page 13) : gentec-eo.com/Content/downloads/complete-catalogue/Gentec-EO_Catalogue_2014_V2.0.pdfGentec Catalog ED-100 (Page 32) : http://www.tsukasa-tec.co.jp/product/measure/documents/catalog_000.pdfThe code for the Laser energy Calculator is at: github.com/leswright1977/Nitrogen_Laser_Energy_Calculator#laser#optics
Wire Ended to Doorknob Capacitor Modification (Inexpensive Nitrogen Laser Capacitors! (Part 2)) Les Lab 2021-02-13 | Episode 18#highvoltage #electronics #laser Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!This is a quick follow up video to "Inexpensive Nitrogen Laser Capacitors!"I convert wire ended capacitors to Doorknob Capacitors and try them in the Nitrogen Laser.Thanks for the suggestions from the previous video!If you found this content useful, and would like to support this Channel, please consider donating: paypal.me/leslaboratory
Hacking a Laser! MNL-100 Nitrogen Laser RS-232 Fibre Optic Interface Hack! Les Lab 2021-01-13 | Episode 17#laser #teardown Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!A look inside an Industrial/Commercial Lasertechnik MNL-100 Nitrogen Laser! This is a beautiful piece of Laser engineering, and uses solid state switches as opposed to spark gaps or thyratrons!I hack up a fibre optic RS-232 interface and use the manufacturers software to control it.I also use a made Fibre coupling lens assembly and pump a home made Dye Laser with it.This particular version is rated at 140uJ (51 kW peak power) at 24Hzhttps://www.ltb-berlin.de/en/products/lasers/mnl-100/Link to Manuals: http://www.ltb-berlin.de/en/company/downloads/Direct link to the Marathon Software: http://www.ltb-berlin.de//assets/uploads/marathon-software.zipRelevant patent:patentimages.storage.googleapis.com/a6/c7/da/0abd64a49c006f/US5875207.pdf#optics#laser
How to make Inexpensive Nitrogen Laser Capacitors! Les Lab 2020-12-22 | Episode 16#laser #electronics #optics Check out my other videos: youtube.com/leslaboratoryPlease don't forget to like,subscribe and comment for more great content!If you found this content useful, and would like to support this Channel, please consider supporting this work on Patreon: patreon.com/leslaboratoryOr donate directly: paypal.me/leslaboratoryAlternatively, please share this content on your social media platforms, it really helps me out!In response to questions for viewers, I substitute the expensive Doorknob Capacitor in one of my Nitrogen Lasers with inexpensive wire ended capacitors. Will it work? Watch the video to find out!
