High-speed tunable thermic modulation of far infrared radiation pulses

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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)© (1990) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

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