What's the rating ohm rating on the resistors? I would also like to know the type of transistor (NPN or PNP) and the amperage input/output I can see 9 volts input unless the battery happens to be dead. Btw what's the headphone style jack for? (in short I'm wanting the technical details for how to build my own laser using the same kind of diode)
That looks like a lot of heatsinking. Is it a a130 or a140 Tesla? If a140, I would think it should be able to last with that much heatsinking and based off other's. Mine is a portable running at 1.25A and it hasn't died yet (though I do do short duty cycles). What current is it at right now?