Topic

laser diode

2 videos. Ranked by independent recommendations, not by views.

1. 

   1 Laser diode self-mixing: Range-finding and sub-micron vibration measurement

   Applied Science 6 people · 9 months · since Aug 2019

   Applied Science uses a laser diode's built-in monitor photodiode for self-mixing interferometry, measuring distance and sub-micron vibration; cited when people ask about the third pin.

2. 

   2 Constant current power supply and laser / LED driver tutorial

   Afrotechmods 4 people · 4 months · since May 2015

   Shows a simple LM317 constant current circuit, offered as a cheap way to drive LEDs, though its fitness for laser diodes gets questioned.