Spatial Noise and Correctability of Type-II InAs/GaSb Focal Plane Arrays

Pierre Yves Delaunay; Manijeh Razeghi

doi:10.1109/JQE.2009.2035715

Spatial Noise and Correctability of Type-II InAs/GaSb Focal Plane Arrays

Pierre Yves Delaunay, Manijeh Razeghi

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

A long wavelength infrared focal plane array based on Type-II InAs/GaSb superlattices was fabricated and characterized at 80 K. The noise equivalent temperature difference of the array was measured as low as 23 mK (f# = 2), for an integration time of 0.129 ms. The spatial noise of the array was dominated by the nonuniformity of the illumination through the circular aperture. A standard two-point nonuniformity correction improved the inhomogeneity equivalent temperature difference to 16 mK. The correctability just after calibration was 0.6. The long-term stability time was superior to 25 hours.

Original language	English (US)
Pages (from-to)	584-588
Number of pages	5
Journal	IEEE Journal of Quantum Electronics
Volume	46
Issue number	4
DOIs	https://doi.org/10.1109/JQE.2009.2035715
State	Published - Apr 2010

Keywords

Focal plane array
infrared
photodetectors
spatial noise
type II superlattice

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/JQE.2009.2035715

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title = "Spatial Noise and Correctability of Type-II InAs/GaSb Focal Plane Arrays",

abstract = "A long wavelength infrared focal plane array based on Type-II InAs/GaSb superlattices was fabricated and characterized at 80 K. The noise equivalent temperature difference of the array was measured as low as 23 mK (f# = 2), for an integration time of 0.129 ms. The spatial noise of the array was dominated by the nonuniformity of the illumination through the circular aperture. A standard two-point nonuniformity correction improved the inhomogeneity equivalent temperature difference to 16 mK. The correctability just after calibration was 0.6. The long-term stability time was superior to 25 hours.",

keywords = "Focal plane array, infrared, photodetectors, spatial noise, type II superlattice",

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N2 - A long wavelength infrared focal plane array based on Type-II InAs/GaSb superlattices was fabricated and characterized at 80 K. The noise equivalent temperature difference of the array was measured as low as 23 mK (f# = 2), for an integration time of 0.129 ms. The spatial noise of the array was dominated by the nonuniformity of the illumination through the circular aperture. A standard two-point nonuniformity correction improved the inhomogeneity equivalent temperature difference to 16 mK. The correctability just after calibration was 0.6. The long-term stability time was superior to 25 hours.

AB - A long wavelength infrared focal plane array based on Type-II InAs/GaSb superlattices was fabricated and characterized at 80 K. The noise equivalent temperature difference of the array was measured as low as 23 mK (f# = 2), for an integration time of 0.129 ms. The spatial noise of the array was dominated by the nonuniformity of the illumination through the circular aperture. A standard two-point nonuniformity correction improved the inhomogeneity equivalent temperature difference to 16 mK. The correctability just after calibration was 0.6. The long-term stability time was superior to 25 hours.

KW - Focal plane array

KW - infrared

KW - photodetectors

KW - spatial noise

KW - type II superlattice

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Spatial Noise and Correctability of Type-II InAs/GaSb Focal Plane Arrays

Abstract

Keywords

ASJC Scopus subject areas

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