Robert,
Diffractive variable attenuator is another option:
http://www.dmphotonics.com/DVA_femtosecond.htm
http://www.dmphotonics.com/DVA.pdf
Best,
Sergey.
> I am looking for a practical way of continuously reducing the output of a
> Ti:Sapphire laser from approx. 1.5 mJ to the microjoule level. Currently we
> use a beam splitter followed by a half wave plate and a this Rochon
> polarizer. This works well, but the cost of a new thin polarizer is around
> $2,000. Does anyone know of a source of more reasonably priced thin
> polarizers that can handle around 1.5 mJ? If not, does anyone have an
> alternate solution?
>
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