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MULTI-BAND SUB-WAVELENGTH IR DETECTOR HAVING FREQUENCY SELECTIVE SLOTS AND METHOD OF MAKING THE SAME

  • US 20100276595A1
  • Filed: 04/30/2009
  • Published: 11/04/2010
  • Est. Priority Date: 04/30/2009
  • Status: Active Grant
First Claim
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1. A multiband infrared (IR) detector array, comprising:

  • a metallic surface having a plurality of periodic resonant structures, each periodic structure configured to resonantly transmit electromagnetic energy in a distinct frequency band; and

    a plurality of pixels each comprising at least first and second resonant structures corresponding to first and second wavelengths, respectively,wherein, for each pixel, the first and second resonant structures each have respective first and second detectors associated therewith,wherein the first and second resonant structures are arranged such that essentially all of the electromagnetic energy at the first wavelength passes through the first resonant structure onto the first detector and essentially all of the electromagnetic energy at the second wavelength passes through the second resonant structure onto the second detector, wherein the first and second detectors comprise mercad telluride.

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