Light modulator

Details Light modulator Light modulator

1974-09-12

1976-02-17

Corbin, John K.

350157, 350160R, G02F 103, G02F 129

Patent

active

039388786

ABSTRACT:
A light modulator comprises a crystal of the m3m class such as potassium tantalum niobate in which electrically-induced birefringence is obtained by setting up a field within the crystal in a direction which is not parallel to any of the crystallographic axes. With this orientation of the field (preferably at 45.degree. to the axes) the crystal becomes birefringent for light travelling parallel to the field direction. The birefringence is proportional to the square of the field. The modulator may, for example, be constructed as an amplitude modulator in which case it will be situated between a crossed polarizer and analyzer.

REFERENCES:
patent: 2936380 (1960-05-01), Anderson
patent: 3290619 (1966-12-01), Geusic et al.
patent: 3402002 (1968-09-01), Eden
patent: 3501219 (1970-03-01), Caulfield
patent: 3531179 (1970-09-01), Jaffe et al.
patent: 3532891 (1970-10-01), Simmons et al.
patent: 3602904 (1971-08-01), Cummins
patent: 3630597 (1971-12-01), Hulme
"Handbook of Lasers with Selected Data on Optical Technology" Edited by Robert J. Pressley, Published by The Chemical Rubber Co., Cleveland, Ohio, 1971, p. 452.
"Electronic Conduction in Solids" by Arthur C. Smith et al., Published by McGraw-Hill, New York, 1967, pp. 85-88.

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