Got another new toy, another chinese prototype laser head, looks like a copy of a Lightwave M110 head. Though this guy puts out 1342nm. It is pumped with a little 5w 808nm Spectra Physics fiber coupled diode, a SFA200-808-Z5-01A (http://www.oclaro.com/product_pages/..._SF_Series.php) The diode itself sits on a couple pelters and the fiber is fed to a lens and mirror to end pump a vandanate crystal with a little q-switch in the cavity.
The basic construction is no bad quality. Though the little interface board has some awful soldering. I managed to clean some of it up.
I powered it up with my 1U rack mount supply from Electronic Measurements Inc, it is very stable and well behaved, had to use this since my real diode supplies dont go this high (7 amps)
It seems like it works. I need to figure out what the resonant frequency of the q-switch is. There are no markings on the switch or the unit. Hopefully it will be 40.68MHz, I have a couple drivers that would work great. The path the beam takes though the crystal is kind of offset. Is this to polarize the beam>
Here are some pics of it including one pic taken with my IR modified dSLR.
Chinese 1342nm DPSS Laser by macona, on Flickr
Chinese 1342nm DPSS Laser by macona, on Flickr
Chinese 1342nm DPSS Laser by macona, on Flickr
Chinese 1342nm DPSS Laser by macona, on Flickr
Chinese 1342nm DPSS Laser by macona, on Flickr