Asking over at PL I received an answer that these OPSL lasers are pumped with 808 nm to make 1154 which is SHF to 577 nm. That is good news, finding a laser diode at 1154 nm isn’t happening nor needed for this OPSL module. I already have 808 nm laser diodes which should work.
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Excellent news. I did wonder why 1154nm diodes weren’t widely available if used in OPSL’s.
So they work nearly identical to DPSS only instead of a solid state being pumped by 808, its a semiconductor.
Yes, from what I gather, when pumped at 808 nm there is a range of wavelengths the OPS can produce, depending upon the angle of the BRF crystal, 1154 one of them. Here’s a drawing I found this morning:
I also found the wavelength of the pump isn’t picky, the 808 nm pump diode does not need to be carefully wavelength controlled using a TEC.
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So the only thing missing is the doubler in that diagram.
I tried to find a diagram which showed both the doubler and the BRF crystal with the OPS, but so far, this is the best, I’ve found, missing both of those.
It’s a good diagram. I imagine the shg crystal would be placed before the oc.
Yep
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Based on the fact that the LBO is in a oven I presume this is also NCPM. Eliminating the need for wave plates and rotation mounts.
I don’t know whether noncritical phase matching, I suppose if no way to rotate it, that must be so.
The oven could be an indication. NCPM usually requires temperature instead of polarisation.
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