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Proceedings Paper

Coherent infrared imaging camera (CIRIC)
Author(s): Donald P. Hutchinson; Marc L. Simpson; Charles A. Bennett; Roger K. Richards; Mike S. Emery; Richard I. Crutcher; David Sitter; Eric A. Wachter; Michael A. Huston
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Paper Abstract

New developments in 2-D, wide-bandwidth HgCdTe (MCT) and GaAs quantum-well infrared photodetectors (QWIP) coupled with monolithic microwave integrated circuit (MMIC) technology are now making focal plane array coherent infrared (IR) cameras viable. Unlike conventional IR cameras which provide only thermal data about a scene or target, a coherent camera based on optical heterodyne interferometry will also provide spectral and range information. Each pixel of the camera, consisting of a single photo-sensitive heterodyne mixer followed by an intermediate frequency amplifier and illuminated by a separate local oscillator beam, constitutes a complete optical heterodyne receiver. Applications of coherent IR cameras are numerous and include target surveillance, range detection, chemical plume evolution, monitoring stack plume emissions, and wind shear detection.

Paper Details

Date Published: 15 September 1995
PDF: 6 pages
Proc. SPIE 2540, Current Developments in Optical Design and Engineering V, (15 September 1995); doi: 10.1117/12.219519
Show Author Affiliations
Donald P. Hutchinson, Oak Ridge National Lab. (United States)
Marc L. Simpson, Oak Ridge National Lab. (United States)
Charles A. Bennett, Oak Ridge National Lab. (United States)
Roger K. Richards, Oak Ridge National Lab. (United States)
Mike S. Emery, Oak Ridge National Lab. (United States)
Richard I. Crutcher, Oak Ridge National Lab. (United States)
David Sitter, Oak Ridge National Lab. (United States)
Eric A. Wachter, Oak Ridge National Lab. (United States)
Michael A. Huston, Oak Ridge National Lab. (United States)


Published in SPIE Proceedings Vol. 2540:
Current Developments in Optical Design and Engineering V
Robert E. Fischer; Warren J. Smith, Editor(s)

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