Coherent infrared imaging camera (CIRIC)

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

doi:10.1117/12.219519

15 September 1995 Coherent infrared imaging camera (CIRIC)

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

Author Affiliations +

Proceedings Volume 2540, Current Developments in Optical Design and Engineering V; (1995) https://doi.org/10.1117/12.219519
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

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.

Citation Download Citation

Donald P. Hutchinson, Marc L. Simpson, Charles A. Bennett, Roger K. Richards, Mike S. Emery, Richard I. Crutcher, David Sitter, Eric A. Wachter, and Michael A. Huston "Coherent infrared imaging camera (CIRIC)", Proc. SPIE 2540, Current Developments in Optical Design and Engineering V, (15 September 1995); https://doi.org/10.1117/12.219519

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