Hello and welcome to the LPF!
Regarding your question: it wouldn't work.
The crystal pair in green DPSS lasers that converts IR light into 532nm green needs
to be pumped by 808nm IR, not 780nm.
Hello and welcome to the LPF!
Regarding your question: it wouldn't work.
The crystal pair in green DPSS lasers that converts IR light into 532nm green needs
to be pumped by 808nm IR, not 780nm.
I thought that it would work like this :
808 nm-Nd:YVO4(*1.3168316...)=1064 nm-KTP (1/2)=532nm
780nm-Nd:YVO4(*1.3168316...)=1027,12871...nm-KTP(1/2)=513,5643nm
Yeah, if that would work, I think we would have seen a 513nm laser hereI thought that it would work like this :
808nm-Nd:YVO4(*1.3168316...)=1064 nm-KTP (1/2)=532nm
780nm-Nd:YVO4(*1.3168316...)=1027,12871...nm-KTP(1/2)=513,5643nm
A 780nm diode through Nd:YVo4 --> KTP will still lase at 532nm:
Quote from Sam Goldwasser:
"If you pump Nd:YVO4 with 780 nm, the absorption is much lower. If it does lase,
it's still at 1,064 nm, just very weak."
EDIT: @532 with Envy, the reason why you haven't seen them is because they're extremely hard to produce, and even harder for a hobbyist to use/align.
594.3nm uses YVO4 and KTP, however, in this case, a different non-linear optical process is used. The YVO4 lases at both 1064 and 1319 (or was it 1342?). This is then combined in the KTP to produce 594.3nm light.
589nm is a more traditional SHG process, but using proprietary gain media.
Thank you very much for the concise answer. I kind of figured it was complicated and thus "expensive", but it's nice to get a clear, quick answer like this