I tried and it it has failed a lot of times, the difficult part is to keep the head at max temperature when the photon passes through, and don't forget about the temperature of the laser, it can melt the PSCN and NSCN which is bad, i tried insulation and it does not work,
try making a charge shot type laser, make the laser build up a few photont in a chamber and be heated up with a plasma head heater, and when its at max temp open it up and boom! you got a 9700 temp laser!