🚀 go-pugleaf

jeh@cmkrnl.com writes:

> In article <1992Dec29.195908.15003@radian.uucp>, jlange@radian.uucp (John Lan
> > 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?  
> 
> A Krypton ion laser with flat (non-wavelength-selective) optics produces very
> nice red, yellow, green, and blue lines -- in proportions such that the beam 
> a fair approximation to white!  (a laser emitting a white beam looks DAMNED 
> strange at first!)  Run this through a prism and you have the four colors to 
> with independently.  Most if not all of the "Laserium" laser light shows use
> Krypton lasers. 

Jamie,

        Krypton lasers produce yellow, red (about 720nm, very 
pretty) and infrared.  Argon lasers produce many bands of blue and 
green.  Coherent produces a nice laser (ours produces 8000mw of 
white light- can burn your hand) the Purelight laser.  It is an 
Ion laser- as is all gas plasma lasers................sq

(there are argon, krypton and argon/krypton mix gas lasers.  Of 
course the mix gas lasers are most expensive, ours was about 25 
thousand dollars new...)