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well that's what the article says too.... It's amazing how you can get so many colour with the same gasses.Is the concentration different or the pressure? Or the current going through? :-/Schrecken_Licht said:Actually I think I did read somewhere else that the first He-Ne was IR.....visible red came later.
Diachi said:yeah I always wondered that too, like how you could get red green yellow and IR from the same gases
Seoul_lasers said:[quote author=Diachi link=1215542316/0#4 date=1215600694]yeah I always wondered that too, like how you could get red green yellow and IR from the same gases
Schrecken_Licht said:I think some of it has to do with the internal mirrors....for instance, some argon lasers are single-line and others are multi-line, but all the lines are there in the single line laser - but the mirrors are set up only to isolate the dominant 488nm line and not emit the others. Probably works the same way for other gas lasers, and perhaps for solid state lasers.