~1W Q-switched green lasers
So I came across a couple of these cute little green lasers...they are some sort of New Wave Research prototype laser. They consist of a L-fold cavity with a ~3x5mm YAG rod, a 3x3x10mm chunk of KTP, and a 2W NEOS RF Q-switch. The cavities are end-pumped by a fast-axis corrected 5W C-mount diode.
- First one is labeled ".880W, 5A"; I don't have a matching Q-switch driver so I didn't test it with the Q-switch, but at 5A diode current I was able to get 400mW of green out of the laser running CW.
- Second one is in pristine physical condition. It came with a seized mirror mount; I replaced the adjusters with fresh ones and spent a bit twiddling the mirrors to try to get it to lase, but no green ever came out. The pump diode is healthy, the coatings are perfect; I'm stumped as to why this unit refuses to lase (given its brother was forgiving enough to produce a nonzero amount of green light at 1.5A into the diode, with no temperature tuning or alignment whatsoever!).
- I also have the diode out of one of these. The pump module has a fast-axis correction lens, a cylindrical collimating lens, and a TEC; you give it 5A and it produces 5W of IR. Would mate well with one of the PPLN+YVO4 microchips (should be good for about a watt of green).
Asking $400 for the first one, $220 for the second one and $100 for the diode. Price-per-watt is a bit high compared to that of the Chinese greenies, but these are pretty nice modular units; a lot more serviceable than a Chinese laser!.
Pics upon request.
EDIT: title might be a bit confusing; these are ~1W with the Q-switch running (insofar as .880W ~ 1W), they are NOT 1W CW green lasers.
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