Clear chemical or material that will absorb or deflect IR?

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Jirby
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Hello All,

I'm curious if there is some chemical or clear / semi-clear material that will absorb or deflect infra red light in the 890 - 910 nm range.

IR absorption would be ideal, but deflection should work as well.
The idea is to prevent reflection of IR back to it's source.

I hope this isn't too vague/broad of a question.
Thanks,
 
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Welcome to the PF. :smile:
Jirby said:
The idea is to prevent reflection of IR back to it's source.
Reflection off of what? What is the IR being directed toward?

Simple window glass generally does not pass IR wavelengths...
 
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Reflection off of what? What is the IR being directed toward?

Consider a stationary source emitting pulses of IR towards a metal or plastic object, with the intention of determining the distance between the source and target object.
In this case, distance is calculated by measuring the time it takes for a pulse to travel to the target and reflect back to the source.
The IR pulse would have a wavelength in the 890 - 910 nm range.
I'm wondering if there is an existing chemical or compound, with which one could coat the target object, or a material that could cover the target object that would absorb the incoming pulse or deflect it away from its source; effectively preventing the distance calculation.
Preferably this compound or material would be clear or at least mostly see-through.

​
 
anorlunda said:
:welcome:

Here are some previous threads on your topic
https://www.physicsforums.com/threads/best-material-for-ir-absorption.684056/
https://www.physicsforums.com/threads/which-transparent-plastics-best-reflect-or-absorb-ir.887158/
https://www.physicsforums.com/threa...id-that-absorbs-ir-and-allows-visible.348873/
Thank you for the links. I'd actually already looked at 2 of these before i posted, but they didn't have the answers I was looking for.
Perhaps I didn't sate my question with enough detail. I provided more info in a reply to Berkeman below.
Cheers!