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JLCPCB PCB Fab & Assembly from $2! Sign up to Get $60 Coupons: https://jlcpcb.com/?from=leslaboratory JLCPCB Engineers Day deals to get up to $125 in coupons and a chance to win a $150 Amazon gift card : https://jlcpcb.com/engineers-day?from=ACT Episode 65 #laser #nanosecond #pulsedlaser #jimwilliams Let'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: https://patreon.com/leslaboratory Or donate directly: https://paypal.me/leslaboratory Alternatively, please share this content on your social media platforms, it really helps me out! Links!: PCB Design Files: https://github.com/leswright1977/avalanche-laser-diode-driver (This is a work in progress and data is being added as and when) NUBM-47 datasheet: https://www.apslasers.com/wp-content/uploads/2022/06/7W-Blue-NUBM47-Datasheet-V3.pdf Dye Laser driven by pulsed laser diodes: https://link.springer.com/article/10.1007/s00340-017-6664-4 A whole range of visible and IR Laser diodes driven in pulsed mode: https://www.sciencedirect.com/science/article/pii/S2213597917300356 Laser Peak Power Calculator: https://www.ophiropt.com/en/laser-peak-power-calculator Application note 47, the Jim Willams Driver (appendix D) https://www.analog.com/media/en/technical-documentation/application-notes/an47fa.pdf 0:00 Intro 0:24 The most powerful Visible Laser diode in the world! 0:54 Pulsed Laser diodes 1:17 Sensitive Laser diodes 1:40 Scientific Literature on Pulsed visible Laser diodes! 4:33 Extraordinary peak powers. 6:12 Application note 47 the Jim Williams avalanche driver 6:50 Manhattan Style board 7:00 A real design in EasyEDA 9:30 JLCPCB $2 PCB's Video Sponsor 10:42 Assembled prototype Drivers 11:28 High Voltage power supply 11:55 Laser Safety 12:04 Powering up the Laser 12:35 Nanosecond pulses! 13:13 Power Measurement 14:47 Calculation 15:18 Building a Laser Rangefinder! 17:00 Fluorescent Dyes 17:46 Future work 18:11 Credits!