Extended SWIR Unipolar Barrier Detectors Lattice Matched to GaSb Substrates

Award Information
Agency: Department of Defense
Branch: Army
Contract: W909MY-16-C-0025
Agency Tracking Number: A161-042-0614
Amount: $99,999.00
Phase: Phase I
Program: SBIR
Awards Year: 2016
Solicitation Year: 2016
Solicitation Topic Code: A16-042
Solicitation Number: 2016.1
Small Business Information
123 Case Circle, Ardmore, OK, 73401-Array
DUNS: 159048698
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Terry Golding
 (580) 559-1064
Business Contact
 Robert Kuester
Phone: (580) 657-2575
Email: kuester@amethystresearch.com
Research Institution
The extended short wavelength infrared (e-SWIR) wavelength band is a performance gap for infrared detectors. At both shorter and longer wavelengths, high performance detector technologies exist: SWIR InGaAs detectors (1.7 m cutoff), and MWIR (3-5 m cutoff) detectors such as InAs-based and GaSb-based Unipolar Barriers, MCT, and InSb. This program proposes development of high performance e-SWIR detectors with cutoff wavelengths in the 2.5 m range, based on lattice-matched InGaAsSb absorber layers on GaSb substrates. The design incorporates a unipolar barrier device architecture that enables the device to be free of the effects of surface leakage currents and generation-recombination dark currents. The design can achieve background-limited (BLIP) performance at T=210K, which is accessible by thermo-electric coolers. The program brings together unique skill sets of two small businesses Amethyst Research who specializes in infrared detector design, development and materials growth, and Attollo Engineering who specialize in FPA fabrication and camera integration. Phase I will demonstrate prototype devices exhibiting dark current 10 times Rule 07 and 85% quantum efficiency. In Phase II FPAs will be fabricated and will be integrated into a thermoelectrically cooled camera, to assess system performance.

* Information listed above is at the time of submission. *

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