[geeks] Whee! Lightning strikes, AGAIN!

[Phil Stracchino]

gsm at mendelson.com wrote:
> I may be wrong, but lasers today are solid state which means that they
> produce whatever color they produce due to their chemical composition.
> I assume that over their life time there is some "drift", but you can't
> tune them. 

Actually, some semiconductor lasers can be tuned, but only by small
amounts, iirc.  There are even a few types of more exotic semiconductor
laser devices that can be tuned over quite a significant range.


-- 
  Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
  alaric at caerllewys.net   alaric at metrocast.net   phil at co.ordinate.org
         Renaissance Man, Unix ronin, Perl hacker, Free Stater
                 It's not the years, it's the mileage.