Acoustooptic TeO₂ tunable filter using far-off-axis anisotropic Bragg diffraction

Abstract

Noncollinear acoustooptic tunable filters using TeO₂ crystals are described. An anisotropic Bragg diffraction is studied applying simple design expressions to a tilt type in which an acoustic wave is launched a little off the [110] axis. Tuning property, filter bandwidth, angular aperture, required acoustic power, deflection angle, divergenceless configuration, and rapid spectrum scanning have been discussed. These filter properties have been confirmed with measurements using three kinds of filter devices: a basic type, an acoustically enhanced type, and a large angular aperture type. A 5-Å bandwidth at 4000 Å was obtained by slow scanning. A 32-Å separation at 4000 Å was observed by a rapid scanning of 0.5 msec throughout the visible region with an extremely low electric drive power.

© 1976 Optical Society of America

High resolution noncollinear acoustooptic filters with variable passband characteristics: design

A. Sivanayagam and D. Findlay
Appl. Opt. 23(24) 4601-4608 (1984)

Hyperspectral imaging performance of a TeO₂ acousto-optic tunable filter in the ultraviolet region

Neelam Gupta and Vitaly Voloshinov
Opt. Lett. 30(9) 985-987 (2005)

Acousto-optic tunable filter using double interaction for sidelobe reduction

Jean-Claude Kastelik, Hichem Benaissa, Samuel Dupont, and Michel Pommeray
Appl. Opt. 48(7) C4-C10 (2009)

Acoustooptic Bragg diffraction in anisotropic optically active media

Robert S. Seymour
Appl. Opt. 29(6) 822-826 (1990)

Hyperspectral imaging performance based on two TeO₂ acousto-optic tunable filters

Pengchong Wang and Zhonghua Zhang
Appl. Opt. 56(6) 1647-1653 (2017)