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Detection beyond the standard radiation noise limit using spectrally selective absorption

  • US 8,629,398 B2
  • Filed: 05/29/2009
  • Issued: 01/14/2014
  • Est. Priority Date: 05/30/2008
  • Status: Active Grant
First Claim
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1. A thermal detector for sensing infrared radiation comprising an infrared absorber that is spectrally selective, the absorber suspended by one or more electrically conductive support structures so incoming radiation impinges on at least a portion of the infrared absorber and wherein said portion of the infrared absorber absorbs strongly in a desired spectral wavelength region and weakly in a second spectral wavelength region that corresponds with the primary thermal emission region for that temperature.

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