I was trying to change the laser diode in one of our broken OBIS Lasers (640nm, 40mW). Thus I thought I would buy this Thorlabs HL6362MG diode.
If I connect the diode to a power supply directly at 2.6V then it works. The old diode also works (just weak) with the same pins connected to the power supply. Therefore I assume that the pin code of the diode that I bought, matches the original one.
However, when I place the diode into the laser itself, it doesn't work. The old one, however, does work (just that it emits way to weak).