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- Title
Focusing of a Nonlinear Phase-Conjugate Ultrasonic Wave Transmitted through a Phase-Inhomogeneous Layer.
- Authors
Brysev, A. P.; Bunkin, F. V.; Klopotov, R. V.; Krutyanskiı, L. M.; Preobrazhenskiı, V. L.
- 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. © 2001 MAIK “Nauka / Interperiodica”.
- Subjects
ULTRASONIC waves; NONLINEAR theories; ELECTRICAL harmonics
- Publication
JETP Letters, 2001, Vol 73, Issue 8, p389
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1381633