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- Title
Acousto-Optic Diffraction in Paratellurite by a Slow Acoustic Mode. Increase of Diffraction Efficiency of Divergent Light.
- Authors
Antonov, S. N.; Filatov, A. L.
- Abstract
Peculiarities of anisotropic acousto-optic Bragg diffraction in paratellurite by a slow acoustic wave have been considered. The ranges of frequency-angular dependences have been found, in which effective diffraction occurs, and their practical relevance has been formulated. The numerical values for light radiation with a wavelength of 1.06 μm have been obtained. We have proposed the method of enhancement of a diffraction efficiency of divergent optical radiation, which in turn leads to the increase of the response time of an acousto-optical modulator. The method is based on a multifrequency electric control of the acousto-optical modulator. We have shown experimentally that, as distinct from the single-frequency control, a considerable intensity suppression of the zero diffraction order from 30 to 8% is achieved.
- Subjects
TELLURITES; ACOUSTO-optic materials; ACOUSTOOPTICS; DIFFRACTION gratings testing; BRAGG gratings; SOUND wave diffraction; OPTICAL radiometry
- Publication
Technical Physics, 2018, Vol 63, Issue 6, p876
- ISSN
1063-7842
- Publication type
Article
- DOI
10.1134/S106378421806004X