Contrary to the photoconductive detector materials often used in this wavelength range (PbS, PbSe, and HgCdTe), InAs is photovoltaic and does not require an operating voltage.
InSb detectors are photovoltaic elements that produce a current due to the incident IR radiation. InSb detectors are cryogenically cooled.
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Thermopiles for High Temperatures
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Multiplex Arrays up to 5 µm
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First International WORKshop: Infrared Technologies
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