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Single Photon Sensitive HgCdTe Avalanche Photodiode Detector (APD)

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
15985 NW SCHENDEL AVE STE 200 BEAVERTON, OR 97006-6703
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2007
Title: Single Photon Sensitive HgCdTe Avalanche Photodiode Detector (APD)
Agency: NASA
Contract: NNX07CA62P
Award Amount: $99,999.00


A linear mode HgCdT electron-initiated avalanche photodiode (EAPD) capable of 1570nm photon detection efficiency (PDE) at >10 MHz will be developed. The Phase I design, is based on vertical-charge-transport HgCdTe EAPDs recently fabricated using a 3.8-micron wavelength cutoff HgCdTe alloys, which showed excellent 1570nm response, nearly noiseless gain, >650, and GHz bandwidth operation at thermoelectric temperatures. During Phase I, we will perform tradeoff analysis to determine the optimal HgCdTe alloy composition for the application. As example, shortening the cutoff wavelength (e.g. 2-microns) will result in a HgCdTe alloy with reduce dark current and/or higher temperature operation, but will result in a concomitant gain reduction and thereby compromise PDE. In Phase I, we will develop the optimal HgCdTe LPE alloy and we will also modifying our low noise amplifiers (LNA) to match the higher capacitance of the HgCdTe APD, so optimal PDE is achieved. We will deliver at least one packaged part to NASA. During Phase II, we will further optimize the detector, integrate it with the LNA, and deliver a fully-functional, single photon counting module to NASA.

Principal Investigator:

Andrew D. Huntington
Principal Investigator

Business Contact:

Debra S. Ozuna
Business Official
Small Business Information at Submission:

Voxtel, Inc.
12725 SW Millikan Way, Suite 230 Beaverton, OR 97005

EIN/Tax ID: 931285205
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No