Development and evaluation of integrated infrared arrays for astronomical applications

Physics – Optics

Scientific paper

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Infrared Astronomy, Infrared Detectors, Integrated Optics, Linear Arrays, Spaceborne Astronomy, Telescopes, Charge Coupled Devices, Charge Injection Devices, Cryogenic Cooling, Field Effect Transistors, Infrared Astronomy Satellite, Infrared Telescopes, Research And Development, Space Infrared Telescope Facility, Technology Assessment

Scientific paper

The status of a technology program to evaluate existing infrared detector arrays, and to develop improved ones for low background astronomical applications, is described. For applications such as the Shuttle Infrared Telescope Facility, arrays that cover as much of the 1-1000 micron range as possible are of interest. Low background test results for a 2 x 64 Si:Bi charge-injection-device, and 1 x 20 InSb charge-coupled-device arrays, are included. As a result of the present testing, improved, astronomy-optimized extrinsic silicon arrays in both linear and area formats are planned. Efforts to develop accumulation mode MOSFETs specifically for liquid helium temperatures, and cryogenic amplifier and multiplexer circuits, are discussed.

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