High-speed tunable thermic modulation of far infrared radiation pulses

Alexander V. Shvartsburg

doi:10.1117/12.21703

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1 October 1990 High-speed tunable thermic modulation of far infrared radiation pulses

Alexander V. Shvartsburg

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Proceedings Volume 1307, Electro-Optical Materials for Switches, Coatings, Sensor Optics, and Detectors; (1990) https://doi.org/10.1117/12.21703
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

New method of high speed temporal modulation of infra-red. wave beams, reflected from thin films of semiconductor's plasma with free carriers, is proposed. The physical foundations of such method, based on non-linear properties of free carriers plasma in these films, show the possibilities of elaboration of high-speed tunable modulators and polarizers. The reflection of continuous wave beam from the film with tunable reflection coefficient leads to pulses shaping, the pulse duration being as small as 1 nsec. The electric power, necessary for tuning of such modulator, is as small as (formula in PDF)

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Alexander V. Shvartsburg "High-speed tunable thermic modulation of far infrared radiation pulses", Proc. SPIE 1307, Electro-Optical Materials for Switches, Coatings, Sensor Optics, and Detectors, (1 October 1990); https://doi.org/10.1117/12.21703

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