Transverse tunable acousto-optic filter

Details Transverse tunable acousto-optic filter Transverse tunable acousto-optic filter

1980-06-12

1982-08-03

Rosenberger, R. A.

350372, 350373, G02F 133

Patent

active

043425020

ABSTRACT:
An electronically tunable optical filter utilizing noncollinear acousto-optic interaction in a birefringent crystal. The directions of optical and acoustic waves are chosen so that large angular aperture is obtained for an interaction geometry wherein the light beam is perpendicular to the group velocity of the acoustic wave. The transverse configuration provides maximum optical aperture for the tunable acousto-optic filter.

REFERENCES:
patent: 4052121 (1977-10-01), Chang
patent: 4232952 (1980-11-01), Barta
patent: 4257685 (1981-03-01), Barta
Yano et al., "New Noncollinear Acousto-optic Tunable Filter Using Birefringence in Paratellurite", Applied Physics Letters, vol. 24, No. 6 (Mar. 15 1974), pp. 256-257.
Chang, "Noncollinear Acousto-optic Filter with Large Angular Aperture", Applied Physics Letters, vol. 25, No. 7 (Oct. 1 1974), pp. 370-372.
Chang, "Analysis of the Noncollinear Acousto-optic Filter", Electronics Letters, vol. 11, Nos. 25/26, (Dec. 11 1975), pp. 617-618.

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