Wondering if I could take apart a green 303 laser and use the driver that is in it to drive the pl520. Ive seen them used on red lasers so wondering if I could do the same to the green pl520 50-100mw. Thanks.
The 303 typically houses a 532nm dpss laser module which is an 808nm pump diode and a ktp/yv04 crystal set ( two crystals optically bonded with mirrored ends ) plus optics but the part that matters is the 808nm diode which is driven at avg. 2.2 volts which is not nearly enough to drive your pl520 so that's a no.
You can buy this or repurpose a flashlight LED driver, make a linear, or buy an inexpensive Chinese driver such as this..........however I have had problems with the cheaper Chinese drivers before but the LDSE500 works very well.
Yeah, those 808nm diode drivers won't produce nearly enough forward voltage for a direct diode green. They are the cheapest, by far, of all the drivers available from China. The LDSE500 is a SEPIC driver, IIRC. You will have to set it up for either one or two batteries as I'm not sure the current remains consistent in boost and buck modes.