Cooling lasers
BERCZ.PETER@EPAMAIL.EPA.GOV
Tue, 07 Feb 1995 13:30:29 -0500
ADVICE PLEASE: As we recently upgraded or EPICS ELITE with a Coherent
Innova 5 Watt UV, plus just now installing a confocal microscope with
a 3 Watt Enterprise, I will be grateful for anyone's institutional
experience with various modes of laser cooling. e.g. city water (in
our case rather high hardness, moderate microparticulate content but
sufficient pressure) versus chiller units. The issue for us is less a
cost/benefit question, more the lack of floor space where big bodied
chillers could be located. Can I, or should I depend on municipal
water at all? One equipment manufacturer (the confocal people) voids
the warranty on the Enterprise if the ambient water temp falls below
10C, claiming moisture condensation damages the optics. However when
questioned about this, they are vague.
My questions to the user community are: Did a chiller prolong the
life of anyone's laser? Did city water cause damage to anyone's
laser? Which chiller units do you recommend, which not.
Any advice will be greatly valued and will be held in strict
confidence, should proprietary products (e.g. chillers) be named in
the discussion.
I am indebted to anyone responding,
J.Pete Bercz, PhD
U.S.Environmental Protection Agency
EMSL/EMRD/Cincinnati, OH
Tel:(513) 569 7480
Fax:(513) 569 7609
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