Method of search for SAW and Leaky waves based on numerical global multivariable procedures

M. Yu. Dvoesherstov; V. I. Cherednick; A. P. Chirimanov; S. G. Petrov

doi:10.1117/12.364555

24 September 1999 Method of search for SAW and Leaky waves based on numerical global multivariable procedures

M. Yu. Dvoesherstov, V. I. Cherednick, A. P. Chirimanov, S. G. Petrov

Proceedings Volume 3900, 3rd International Conference on Optical Information Processing; (1999) https://doi.org/10.1117/12.364555
Event: Third International Conference on Optical Information Processing, 1999, Moscow, Russian Federation

Abstract

A numerical analysis of the surface acoustic waves (SAW), Leaky surface waves has been performed. A method of search for SAW and Bulk waves in crystals is based on the Farnell's technique. A method of search for leaky waves in crystals is based on the calculation of permitted orientations for exceptional bulk waves, which satisfy the stress-free boundary conditions for surface waves. A search for leaky waves is based on the calculation of the Global Extremum of complex boundary condition function, depending on many variables, over the regular grid in combination with local search by Hooke's and Jeeves' method of configurations and by Mugel's procedure in the ravin domains. The optimal characteristics have been found for leaky waves: velocity V, electromechanical coupling coefficient K², the power flow angle PFA⁰, attenuation loss (alpha) , the temperature coefficient of delay in LiNbO₃, LGS and LGN crystals.

Citation Download Citation

M. Yu. Dvoesherstov, V. I. Cherednick, A. P. Chirimanov, and S. G. Petrov "Method of search for SAW and Leaky waves based on numerical global multivariable procedures", Proc. SPIE 3900, 3rd International Conference on Optical Information Processing, (24 September 1999); https://doi.org/10.1117/12.364555

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