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Acousto-optical (AO) interaction is one of the most effective principles for electronic control of the optical radiation characteristics. Further development of this approach may be related to the use of fluids as a working media. In this paper, it is proposed to optimize spatial distribution of the refractive index in acoustic lens by applying two frequencies simultaneously. The simulation results are given. The optimal frequency combinations in terms of the central lobe intenity are found.

A two-frequency mode to control acoustic field distribution inside cylindrical lens