Abstract
The propagation of a nonlinear phase-conjugate ultrasonic wave through a layer introducing random phase aberrations is studied experimentally. The wave is generated by an overthreshold parametric phase-conjugating ultrasonic amplifier. It is shown that, with the extent of nonlinearity achieved for the conjugate wave, the phase locking of harmonics is retained and, as a consequence, a compensation of the distortions introduced by the layer takes place. The possibility of an automatic focusing of a nonlinear phase-conjugate wave propagating in an inhomogeneous medium is demonstrated, which is important for practical applications.
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 73, No. 8, 2001, pp. 434–437.
Original Russian Text Copyright © 2001 by Brysev, Bunkin, Klopotov, Krutyanski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Preobrazhenski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \).
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Brysev, A.P., Bunkin, F.V., Klopotov, R.V. et al. Focusing of a nonlinear phase-conjugate ultrasonic wave transmitted through a phase-inhomogeneous layer. Jetp Lett. 73, 389–392 (2001). https://doi.org/10.1134/1.1381633
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DOI: https://doi.org/10.1134/1.1381633