Re: Solvent vapors that attack AR coatings?

Filip Ozimek <filip@xxxxxxxxxxxxxxxxxx> writes:

Sam Goldwasser napisa³(a):

What would be different about the coatings ona these IR-blocking filters
made of green glass???

Maybe there is a simple problem with quality of these mirrors? For
example, very HR dielectric mirrors used in CDRS (=cavity ring down
spectroscopy) are able to lose their transmission/reflection in few
weeks after unpacking. If you can, check how looks these mirrors in
different laser of the same kind/type.

Thanks, but it's not a mirror, it's an IR-blocking filter with an AR coating.
The filter is a green glass. It's not clear if the glass was affected but
the coating is definitely damaged, uniformaly.

There have been thousands of these lasers produced and I have several which
have no problem. This laser was used in some sort of microscope so there
could have been solvent vapors, though according to their claims, nothing
in more than microliter quantities. And, none of the other optics in the
laser were affected at all.

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