Monochromatic yellow lasers between 570-580nm?

[Cyparagon]

Can photons be added

That's pretty much what frequency doubling and sum frequency generation is. Frequency doubling is adding two photons of the same wavelength, and sum frequency generation is adding two photons of different wavelengths.

 

[Onryo]

Boring =)

lol, I knew that was coming. Gave ya a heads up.

Post 8) I wrote zzzz zzzz still awake :beer:

Post 12) I call it "geekery"

Post right above you I say "IIll try to leave it at that and just except the fact that I love burning stuff with my lasers and marvel at the beams More important I don't want to put people to sleep with this."

Some ppl truly are interested in stuff like this. Its 4am and I cant stop reading about knife edging, JML polarizing beam splitters, Tower Optical Waveplates ... EMS 4000 scanners ..... ROFL ... I am hopeless. Going to take a sleeping pill Long day at work tomorrow and I am going to need a clear head.

All the best