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Need help finding a gas or liquid that absorbs IR and allows visible.

  1. Oct 25, 2009 #1
    I am trying to find a gas or liquid that likes to absorb the lower portion of the IR sperctrum (700–1400nm) but lets visible light pass (380-750nm). It can be a liquid or gas because it is going in a sealed container.

    I know that water absorbs infrared to a certain extent and thats why the oceans appear blue for the most part. I have also been looking into the greenhouse gas effect and how it helps to trap the heat using water vapor, CO2 and CO3/ozone.
    What are the best absorbers of IR that transmit visible light?

    Thanks in adavnce
  2. jcsd
  3. Oct 25, 2009 #2
    I would also be interested in this if anyone knows.
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