Just a thought, but does anyone know of a laser medium that would accept pump at 445 with output elsewhere in the visible spectrum?
Alexandrite does not count (755 hardly counts as visible).
I am pretty sure some dyes will pump acceptably at this wavelength, which gets yellows and reds at the cost of major engineering pain (CW dye is hairy to implement, 3 level system, self terminating, pain), but if there was anything solid state?
The quantum deficit from 445 to 650 or so is painful, but if you could get 20% conversion (the limit is about 60% due to the deficit) that would be ruled a win.
You could probably build a dye rig with these diodes as pump, bring the diodes to a line on the flowing dye on the inside of an AR coated cell, and total internal reflect the intracavity beam off the wall of the dye cell, 20W or so of pump power might get you a few watts of red or yellow with MUCH better beam quality then the pump sources had.
Just a thought.
Regards, Dan.