Piezo-optic, total internal reflection modulator

Details Piezo-optic, total internal reflection modulator Piezo-optic, total internal reflection modulator

1979-02-21

1981-03-17

Moskowitz, Nelson

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

350162R, 350358, H01S 310, G02F 133

Patent

active

042570166

ABSTRACT:
A piezo-optical light modulator comprising an interaction medium and a transducer on one face of, and in optical isolation from, the interaction medium. Electrical signals are applied to create a periodic alternating strain field within the transducer. This field is transmitted into the interaction medium to create a shallow strain diffraction grating at a modulating surface. A light beam is projected so as to undergo a total internal reflection at this modulating surface, a portion of the light being selectively diffracted out of the incident beam.

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Kramer et al., "T.I.R. Acousto-Optic . . . Modulator," 5/76, 3 pp., Conf. on Laser and Electrooptical Systems, San Diego, Calif.
Shah, "Fast Acoustic . . . Modulator," 11/15/73, pp. 556-558, Appl. Phys. Lett., vol. 23, #10.
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Kramer, "Elasto-Optic . . . Wave Properties," 1976, 265 pp., PHD Thesis, University of Rochester, No. 76-24,010.

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