Wavelength and Polarization Agile Infrared Detectors based on HgCdTe

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9550-07-C-0099
Agency Tracking Number: F074-027-0022
Amount: $99,990.00
Phase: Phase I
Program: STTR
Awards Year: 2007
Solicitation Year: 2007
Solicitation Topic Code: AF07-T027
Solicitation Number: N/A
Small Business Information
EPIR TECHNOLOGIES, INC.
590 Territorial Drive, Suite B, Bolingbrook, IL, 60440
DUNS: 068568588
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Silviu Velicu
 Director of R&D/Senior Engineer
 (630) 771-0203
 svelicu@epir.com
Business Contact
 Sivalingam Sivananthan
Title: President
Phone: (630) 771-0201
Email: ssivananthan@epir.com
Research Institution
 UNIV. OF SANTA CRUZ
 Joel Kubby
 1156 High Street
Santa Cruz, CA, 95064
 (831) 459-1073
 Nonprofit college or university
Abstract
Modern seekers need to detect, recognize, identify and track a variety of autonomously guided munitions under a wide spectrum of conditions and countermeasures. We propose the implementation of hyperspectral and polarization-sensitive techniques based on HgCdTe infrared detectors to improve the accuracy of target detection for these seekers. In the proposed hyperspectral system, the HgCdTe detector senses only infrared photons of a particular wavelength selected by a tunable Fabry-Perot interferometric filter. The Fabry-Perot structure consists of a pair of vertically distributed Bragg mirrors and a membrane, with an air gap, the thickness of which determines the narrow wavelength band of infrared radiation that passes through to the detector. The filter tunability is achieved by applying a bias voltage across the two distributed Bragg mirrors. Polarization detection capabilities will be added to the hyperspectral elements by overlaying an array of microgrid polarizers. We will extract the Stokes parameters and obtain polarization images. The proposed technique will operate at high frame rates with minimum distortion, will be lightweight and compact. EPIR Technologies is the only small company with the facilities and demonstrated expertise for the molecular beam epitaxial growth of high-quality HgCdTe-based materials and its processing into high performance detectors.

* information listed above is at the time of submission.

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