NASA 1996 SBIR Phase I

PROJECT TITLE : : A 640 x 480 Element Room-Temperature Focal Plane Array for 0.5 - 2.5 µm Imaging

TECHNICAL ABSTRACT (LIMIT 200 WORDS)

We propose to develop and deliver a high resolution near infrared camera, based on the best available detector material and readout electronics. In Phase I we will fabricate detector arrays in InxGa1-xAs and HgyCd1-yTe that absorb light out to 2.5 µm, compare shunt resistance and quantum efficiency, and fabricate 128 x 128 focal plane arrays of each for testing in Sensors Unlimited's commercial camera. We will also submit a design for a 640 x 480 element silicon multiplexer. In Phase II, we will select the best performing material and optimize processing techniques to fabricate large-scale detector arrays of the superior material. We will also fabricate and optimize our readout electronics and thin the detector substrate to absorb light down to 0.5 µm. The final camera will be thermoelectrically cooled to 200K to achieve detectivities beyond 1012cmÖHz /W in a room-temperature environment. The Rockwell International Science Center will consult on the project.

Sensors Unlimited already sells 128 x 128 element cameras for the 1.0 - 1.7 µm spectrum, based on an indium gallium arsenide focal plane array. We estimate a market to us of $5 - 10 million/year, upon successful completion of a Phase II program based on a 640 x 480 element unit for 0.5 - 2.5 µm. Applications include remote sensing, low-cost thermal imaging, and process control.

Dr. Gregory H. Olsen
Sensors Unlimited, Inc.
3490 U.S. Route 1, Building 12
Princeton, NJ 08540

Sensors Unlimited, Inc.
3490 U.S. Route 1, Building 12
Princeton, NJ 08540