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Proceedings Paper

A few more words on resonant acoustooptical interaction
Author(s): Vladimir V. Petrov
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Paper Abstract

There is considered theoretically the competition near the resonant acousto-optical (AO) conditions of two mechanisms which influence to the diffraction efficiency ηd variation, when the thickness L of the sample (the length of interaction) is changed: (1) the enhancement of ηd due to increase of L, and (2) degradation of ηd due to the increase of optical absorption αL in crystal. It is shown that: (1) when changing the length of interaction L the maximum diffraction efficiency ηd is changed and shifted in wavelength's scale, reaching the maximum value at defined L which depend on the particular interaction geometry; (2) for particular considered in present work crystals the variation of L is more critical to the wavelength λ change for GaAs as compared to InP; (3) when realizing the optimized geometry of AO interaction closed to resonant condition at frequency 2.5 GHz, the diffraction efficiency in GaAs crystals can reach 8% and in InP 3.5% per 1 mW of conducted electromagnetic power (correspondingly 8000 and 3500% per 1 W of RF power) when the thickness of samples is about 4 mm.

Paper Details

Date Published: 6 November 2001
PDF: 6 pages
Proc. SPIE 4514, Acousto-Optics and Applications IV, (6 November 2001); doi: 10.1117/12.447614
Show Author Affiliations
Vladimir V. Petrov, Saratov State Univ. (Russia)

Published in SPIE Proceedings Vol. 4514:
Acousto-Optics and Applications IV

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