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I Gases that absorb IR radiation

  1. Mar 22, 2016 #1
    Hello,

    I'm looking for a gas (hopefully one that is readily available) that will absorb Nd:YAG laser radiation at 1064 nm. The purpose is to heat the gas to transmit heat into a glass fiber composite which normally does not absorb IR light.
     
  2. jcsd
  3. Mar 22, 2016 #2
  4. Mar 22, 2016 #3

    mfb

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    Does it have to be a gas? Water vapour is not a bad approach if it does have to be a gas.
     
  5. Mar 23, 2016 #4
    Yes, it needs to be a gas. Our laser is 2kW, and we've tried other absorbents. We currently use a superheated nitrogen torch.
     
  6. Mar 23, 2016 #5
    Water vapor doesn't seem to absorb much IR at 1064nm
     
  7. Mar 23, 2016 #6

    mfb

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    Still more than (most?) other common gases. A solid or liquid would give more absorption...
     
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