NASA NTRS · 19800000515
Compact infrared detector
Abstract
Broadband IR detector integrated into compact package for pollution monitoring and weather prediction is small, highly responsive, and immune to high noise. Sensing material is transparent sheet metalized with reflecting coating and overcoated with black material on same side. Pulse produced by chopping of infrared source beam creates transient "thermal lens" that temporarily defocuses laser beam probe. Detector monitoring beam measures defocusing which parallels infrared intensity.
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Gupta, A., Hong, S., Moacanin, J.. 1981-04-01. Compact infrared detector. https://ntrs.nasa.gov/citations/19800000515
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