Laser Pointer Forums - Discuss Laser Pointers | High Power Lasers

It's the first time I've managed to get a proper beamshot out of my 593.5 pen. The room was heavily incensed and I heated the body of the laser first on the top of my electric fire. It only lases yellow now when it's very warm and has to be hot to lase at full power - I think the alignment has shifted and it is coming towards the end of its useful life.

Just need some diffraction gratings now, although the effect with the prism was interesting.