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Supercritical parametric phase conjugation of ultrasound. Numerical simulation of nonlinear and nonstationary mode

Abstract : This paper investigates the saturation mechanism of the nonstationary supercritical mode of parametric wave phase conjugation in a magnetostrictive medium. The numerical simulation considers the two most probable nonlinear mechanisms of interaction between elastic deformation and electromagnetic excitation. For the qualitative study of the dynamics of the system, a one-dimensional numerical simulation is sufficient if applied to an infinite medium with a finite active zone. The temporal form of the conjugate wave is obtained for both hypotheses. Comparison with experiments shows that only one mechanism corresponds to the experimental behavior.
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https://hal.archives-ouvertes.fr/hal-00142694
Contributor : Marie-Christine Nodot Connect in order to contact the contributor
Submitted on : Friday, April 20, 2007 - 3:23:29 PM
Last modification on : Saturday, October 9, 2021 - 3:17:59 AM

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Alain Merlen, Vladimir L. Preobrazhensky, Philippe Pernod. Supercritical parametric phase conjugation of ultrasound. Numerical simulation of nonlinear and nonstationary mode. Journal of the Acoustical Society of America, Acoustical Society of America, 2002, 112 (6), pp.2656-2665. ⟨10.1121/1.1506687⟩. ⟨hal-00142694⟩

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