8 October 2007 Wavelength-selective infrared detectors
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Abstract
Several designs that could produce significant wavelength selectivity in micromachined microbolometers are reviewed. These frequency selective surfaces can be achieved using stacks of dielectric coated resistive sheets or by replacing the normal uniform absorbing sheet used in IR microbolometers with true microbolometers (i.e., bolometers that are much smaller than the wavelength) combined with an antenna. Here we discuss dielectric coated designs that can substantially improve the wavelength selectivity of microbolometers.
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Joo-Yun Jung, Sangwook Han, Dean P. Neikirk, "Wavelength-selective infrared detectors", Proc. SPIE 6737, Electro-Optical and Infrared Systems: Technology and Applications IV, 67370Z (8 October 2007); doi: 10.1117/12.736971; http://dx.doi.org/10.1117/12.736971
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KEYWORDS
Absorption

Microbolometers

Dielectrics

Mirrors

Solids

Germanium

Infrared detectors

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