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Looking for polymer that transmits infrared and visible spectrum

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kredinger

Electrical
Oct 29, 2012
2
US
I have a need for a polymer that will transmit infrared and visible spectrum. I have an Electrical background so I could use some expertise in this area. Any help identifying a source for this polymer or an approach to source it would be appreciated.
 
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What do you mean by "infrared;" it covers 700nm to 70000nm

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faq731-376
7ofakss
 
Thanks for asking, I should have included that. The range I need good transmittance is 8 to 14um.
 
How much transmission do you need? How thick of a polymer? all of the common organic polymer bonds I can think of have some strong absorption bands in the IR region.

Usually I'm thinking in cm-1 when it comes to IR due to time on FTIR instruments...

Can you live with 8~13.5um? Polyethylene(PE) is pretty darn clear in that region, but has some strong bands from 13.5-14. Some PE crowds a bit on the 8 end as well. If I recall correctly, HDPE is better on the 8 end.

PE is the best I can come up with for a common organic polymer.

I don't suppose you could use a crystal like KBr, Germanium or sapphire... those are commonly used as FTIR windows and/or lenses.
 
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