This article is cited in 25 papers

Acoustics, Acoustoelectronics

Effect of the spatial structure of an acoustic field on Bragg’s acoustooptic diffraction under strong acoustic anisotropy conditions

S. N. Antonov^a, A. V. Vainer^a, V. V. Proklov^a, Yu. G. Rezvov<sup>b

a</sup> Kotelnikov Institute of Radioengineering and Electronics, Fryazino Branch, Russian Academy of Sciences
^b Novomoskovsk's Institute (subdivision) of the Mendeleyev Russian Chemical-Technological University

Abstract: Bragg’s acoustooptic diffraction in an acoustically anisotropic medium is considered taking into account the two-dimensional spatial diffraction structure of the acoustic beam. The conditions are determined under which reverse transfer of optical power from the diffracted to the transmitted beam in the regime of 100% efficiency of diffraction is considerably suppressed. It is shown that this effect is due to diffraction bending of wave fronts of the acoustic beam in the acoustooptic diffraction plane. The problem of optimization of the piezoelectric transducer size and the spatial position of the input light beam is solved using the criterion of the minimal required power of the acoustic field. The results of simulation in a wide range of the acoustooptic interaction parameters for a Gaussian light beam are reported. The correctness of the model is confirmed experimentally. Recommendations for designers of acoustooptic devices are formulated.

Received: 30.06.2009

 English version: Technical Physics, 2010, 55:3, 413–422

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