HgCdTe detectors for infrared remote sensing applications

Arvind I. D'Souza; Larry C. Dawson; Eric J. Anderson; Arvel Dean Markum; William E. Tennant; Lucia O. Bubulac; Majid Zandian; John G. Pasko; William V. McLevige; Dennis E. Edwall; Jeffrey W. Derr; John E. Jandik

doi:10.1117/12.298105

31 December 1997 HgCdTe detectors for infrared remote sensing applications

Arvind I. D'Souza, Larry C. Dawson, Eric J. Anderson, Arvel Dean Markum, William E. Tennant, Lucia O. Bubulac, Majid Zandian, John G. Pasko, William V. McLevige, Dennis E. Edwall, Jeffrey W. Derr, John E. Jandik

Author Affiliations +

Proceedings Volume 3221, Sensors, Systems, and Next-Generation Satellites; (1997) https://doi.org/10.1117/12.298105
Event: Aerospace Remote Sensing '97, 1997, London, United Kingdom

Abstract

Remote sensing applications including the National Polar Orbiting Environmental Satellite System (NPOESS) require imaging in a multitude of infrared spectral bands, ranging from the 1.58 micrometer to 1.64 micrometer VSWIR band to the 11.5 micrometer to 12.5 micrometer LWIR band and beyond. These diverse spectral bands require high performance detectors, operating over a range of temperatures; room temperature for the VSWIR band 100 K for MWIR, LWIR and VLWIR, these needs can all be met using molecular beam epitaxy (MBE) to grow HgCdTe. The flexibility inherent in the MBE growth technology is its ability to vary the HgCdTe material's bandgap within a growth run and from growth run to growth run, a capability necessary for remote sensing applications that require imaging in a wide variety of spectral bands. This bandgap engineering flexibility also permits tailoring the device architecture to the various specific system requirements. This paper combines measured detector optical and electrical data, with noise model estimates of ROIC performance to calculate signal to noise ratio (SNR), D* or noise equivalent temperature difference (NE(Delta) T), for each spectral band. The SNR, D* and/or NE(Delta) T are calculated with respect to system focal plane specifications, as required for the meteorological NPOESS.

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Arvind I. D'Souza, Larry C. Dawson, Eric J. Anderson, Arvel Dean Markum, William E. Tennant, Lucia O. Bubulac, Majid Zandian, John G. Pasko, William V. McLevige, Dennis E. Edwall, Jeffrey W. Derr, and John E. Jandik "HgCdTe detectors for infrared remote sensing applications", Proc. SPIE 3221, Sensors, Systems, and Next-Generation Satellites, (31 December 1997); https://doi.org/10.1117/12.298105

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