🚀 go-pugleaf

jlange@radian.uucp (John Lange) writes:

> In nightclubs I have recently seen light effects which apparently
> use bright red, green, and blue lasers which are modulated with 
> mirrors (I think) to do interesting things like project color 
> images on a wall.  The red could be a simple He-Ne laser, but what 
> about the green and the blue?  I know these light sources can be 
> made with expensive 
> 


John,

        You can get colored laser light many ways.  Primarily 
today, we use an Argon/Krypton mix gas laser for continuous wave 
"nearly white" laser light.  The Argon/Krypton lasers produce 
laser energy in just about every band from UV to IR, with many 
bands in the blue and green spectra.

        The old way was to use an Argon and a HeNe laser together, 
about 100mw of Argon- prism split mixed with about 20 to 30mw of 
HeNe 630nm red.  The Argon produced both blue and green, many 
bands of each- and when mixed with green gave a suitable orange to 
orange yellow laser.  Nice effects..............sq

(the beams are scanned using General Scanning scanners.....)