[geeks] Whee! Lightning strikes, AGAIN!

[Sandwich Maker]

" From: Phil Stracchino <alaric at metrocast.net>
" 
" 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.

i'm wondering now if they weren't tuned by temperature - geometry
change via thermal expansion.  they were solid state lasers in the
gear he was developing, iirc basically the same as we were using for
long-haul digital fiber in other projectsi, though also iirc the tv
was analog.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh at an.bradford.ma.us                       and think what none thought