On 12/20/2013 4:57 PM, IVP wrote:
> Serious question - if you can focus two or more beams at the same
> point will that work ? Or will they all be equally useless ?

Absolutely that would work, but getting them coincident in all degrees=20
of freedom is not that easy.
Efficient and flat UV mirrors and lenses are not cheap.

It's probably easier to buy a CO2 laser on eBay, of which there are many.

-
Martin K
--=20
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