Acousto-optic filter

Details Acousto-optic filter Acousto-optic filter

1974-08-27

1976-03-16

McGraw, Vincent P.

350149, G02F 134

Patent

active

039443353

ABSTRACT:
An acousto-optic filter utilizing the far-off-axis anisotropic Bragg diffraction comprising an optically anisotropic acousto-optic medium embodied by a paratellurite crystal. An ultrasonic wave generated by a transducer is propagated in a direction different from that of the wave front normal to make the light-sound interaction length in the medium elongate by slanting the bonding surface of the transducer to the crystal medium.

REFERENCES:
patent: 3419322 (1968-12-01), Adler
"Acoustic Wave Propagation in TeO.sub.2 Single Crystal," by Ohmachi et al., JOASA, Vol. 51, No. 1, pp. 164-168, 1972.
"Acousto-Optic Light Deflectors Using Optical Activity in Paratellorite" by Warner et al., J. Appl. Physics, Vol. 43, No. 11, Nov. 1972, pp. 4489-4495.

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