An Interferometric Thermal Detector

Steven E. Hodges; Mark T. Kern; Kwangjai Park

doi:10.1117/12.960661

11 October 1989 An Interferometric Thermal Detector

Steven E. Hodges, Mark T. Kern, Kwangjai Park

Proceedings Volume 1107, Infrared Detectors, Focal Plane Arrays, and Imaging Sensors; (1989) https://doi.org/10.1117/12.960661
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

A novel infrared detection system is presented. A responsivity of 35 fringes per Watt and a time constant of approximately 220 milliseconds were measured at room temperature for a fiber optic interferometric thermal detector (ITD). These mea-surements compare well with predictions based on a thermal model of the sensor. Except for microphonics, the device was noiseless to the limit of measurement; a room temperature D* of about 7X108 centimeter - root Hertz per Watt is predicted by the model. Finally, the performance of alternate ITD designs is discussed.

Citation Download Citation

Steven E. Hodges, Mark T. Kern, and Kwangjai Park "An Interferometric Thermal Detector", Proc. SPIE 1107, Infrared Detectors, Focal Plane Arrays, and Imaging Sensors, (11 October 1989); https://doi.org/10.1117/12.960661

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