A 32x32 Direct Hybrid Germanium Photoconductor Array with CTIA Readout Multiplexer

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNC06CB16C
Agency Tracking Number: 054143
Amount: $70,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solicitation Year: 2005
Solicitation Topic Code: S4.01
Solicitation Number: N/A
Small Business Information
Technoscience Corporation
P.O. Box 60658, Palo Alto, CA, 94306-2306
DUNS: 938517315
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jam Farhoomand
 Principal Investigator
 (650) 838-9833
 jfarhoomand@mail.arc.nasa.gov
Business Contact
 Jam Farhoomand
Title: President & CEO
Phone: (650) 838-9833
Email: jfarhoomand@mail.arc.nasa.gov
Research Institution
N/A
Abstract
We propose to investigate the feasibility of developing a two-dimensional far infrared photoconductor array with the following key design features: 1- A top-illuminated, 2D germanium array (32x32 single or 64x64 mosaic) with the possibility of extension to very large formats. The quantum efficiency is enhanced by metalizing the bottom surface for a second pass. 2- A 2-side buttable 32x32 (64x64 mosaic) CTIA readout multiplexer using advanced cryo-CMOS process. The unit-cell design is optimized for far IR detectors, eliminates detector debiasing, and improves pixel uniformity. The readout is operational down to at least 2.0K. 3- A novel, direct hybrid design using indium-bump technology. This integrated design offers superior noise performance and effectively addresses the readout glow, detector heating, and thermal mismatch between the detector and the readout. This is the key discriminator of this project. The projected sensitivity of this array as well as >1 kpixel (64x64 mosaic) format meets the stated requirements of future NASA instruments. This effort fits well within the scope of the SBIR Subtopic S4.01 and will be a benefit to many large and small NASA projects such as SOFIA and SAFIR.

* information listed above is at the time of submission.

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