Acousto-optic modulation device

Details Acousto-optic modulation device Acousto-optic modulation device

1990-05-29

1992-04-14

Hille, Rolf

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359285, G02F 111

Patent

active

051053047

ABSTRACT:
An acousto-optical modulation device comprises a plurality of acousto-optic modulators arranged in series with each other, to receive a zero-order light from a previous stage of the modulators. A zero-order light emerging from the last stage is used as a modulated light of an incident light. The coefficient of extinction for the zero-order light is raised by this structure, and the acousto-optic modulation device presents a high diffraction efficiency and a high value of the coefficient of extinction at the same time.

REFERENCES:
patent: 4118113 (1978-10-01), Chang et al.
patent: 4381887 (1983-05-01), Guerin et al.
patent: 4443066 (1984-04-01), Freyre
O. Bryngdahl, "Frequency Modulation of a Light Beam by Use of Acoustical Fields", IBM Technical Disclosure Bulletin, vol. 13, No. 2, 7/70.

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