Acousto-optical interaction bandwidth of more than 2 GHz

Vladimir V. Petrov

doi:10.1117/12.262602

27 December 1996 Acousto-optical interaction bandwidth of more than 2 GHz

Vladimir V. Petrov

Proceedings Volume 2969, Second International Conference on Optical Information Processing; (1996) https://doi.org/10.1117/12.262602
Event: Second International Conference on Optical Information Processing, 1996, St. Petersburg, Russian Federation

Abstract

The way of extension of acousto-optical interaction frequency bandwidth to more than one octave is suggested. The main principle used for this aim is to design the electro-acoustical multi-element transducer with variable, along its length, parameters. In such a case to each frequency point inside chosen band exists the region of the transducer's length where, from one hand, the condition for good excitation of sound waves is fulfilled and from the other hand the Bragg condition is also fulfilled because of closed coincidence of real and necessary frequency dependencies of Bragg angle and of the angle of sound wave front inclination. This window moves from one end of the transducer to the other when frequency changes from minimum to maximum one inside the band. The closer real angle frequency dependence follows to necessary one than larger the length of transducer can be done and than more higher the diffraction efficiency can be reached.

Citation Download Citation

Vladimir V. Petrov "Acousto-optical interaction bandwidth of more than 2 GHz", Proc. SPIE 2969, Second International Conference on Optical Information Processing, (27 December 1996); https://doi.org/10.1117/12.262602

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