Co-Located Dual Band (VLWIR1/VLWIR2) Focal Plane Arrays for Space Applications

Award Information
Agency:
Department of Defense
Amount:
$68,585.00
Program:
SBIR
Contract:
HQ0006-03-C-0005
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
Missile Defense Agency
Award Year:
2002
Phase:
Phase I
Agency Tracking Number:
022-0001
Solicitation Topic Code:
N/A
Small Business Information
Advanced Device Technology, Inc.
8 Raymond Ave, Suite #4, Salem, NH, 03079
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
067810648
Principal Investigator
 Peter Kannam
 President
 (603) 894-1402
 kannamp@adtinc.mv.com
Business Contact
 James Wilen, Jr.
Title: Business Development
Phone: (603) 894-1402
Email: wilenj@adtinc.mv.com
Research Institution
N/A
Abstract
"We propose to develop Co-Located Dual Band (VLWIR1/VLWIR2) Focal Plane Arrays on Strained Layer Superlattices (SLS) Material. We propose innovative Al(x)Ga(1-x)As/InAs SLS layers to produce detectors for very long wavelength (22 um). The key features are:1) SLS Material Growth by Migration Enhanced Epitaxy (MEE) Technique. Type II SLS layers are grown with Migration Enhanced Epitaxy Technique by using a Molecular Beam Epitaxial (MBE) reactor.2) SLS Structures for VLWIR Waveband. Detailed analysis is conducted by using 8-band k.p. model to design SLS structures for Very-Long Wavelength (22um) detection.3) Co-Located Dual Band (VLWIR1/VLWIR2) SLS Structures. Co-Located SLS Structures are grown for VLWIR1 (10-16um) and VLWIR2 (16-22um) waveband ranges with Al(x)Ga(1-x)As/InAs SLS layers.4) Simultaneous Detection of Dual Band Signals. The readout circuitry and the interconnect scheme are designed to detect the two waveband signals in a simultaneous fashion during each frame.5) Cross Talk Elimination. The design of the 2-color structure is such that the cross talk among the wave bands and also among the pixels are eliminated.High Performance Al(x)Ga(1-x) As/InAs dectors were already fabricated and tested for SWIR(1-3um) waveband. The results showed: Detectivity (cm-Hz(1/2)/W)=1.3E12 at 77K, 1.4E11 at 250K, 2E10 at 300K, and quantum efficiency (n) = 72%During Phase 1, the growth of Al(x)Ga(1-x)Sb/InAs SLS structures will be optimized and

* information listed above is at the time of submission.

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