Issues

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1998

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August

  

Reviews of topical problems


Wave phase conjugation of ultrasonic beams

 a,  a,  b
a Prokhorov General Physics Institute of the Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russian Federation
b Wave Research Centre, A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russian Federation

The current state of the acoustic wave phase conjugation (PC) problem is reviewed. The generation of phase conjugate ultrasonic waves is discussed with emphasis on the parametric method using electromagnetic pumping in solids. The giant-amplification supercritical parametric PC mode is considered in detail. Ultrasonic PC with a gain in excess of 80 dB is demonstrated for a soft magnetic ceramics-based amplifier. The high quality of supercritical parametric PC sound is confirmed by acoustic-optical visualization. Acoustic PC effects, such as anomalous sound reflection at the PC mirror and the autofocusing and self-targeting of phase conjugate sound beams incident on a scatterer in a liquid, are shown. Recent experimental results demonstrating the potential of PC for applications are presented.

Fulltext pdf (778 KB)
Fulltext is also available at DOI: 10.1070/PU1998v041n08ABEH000429
PACS: 42.65.Hw, 43.25.−x, 43.35.−c (all)
DOI: 10.1070/PU1998v041n08ABEH000429
URL: https://ufn.ru/en/articles/1998/8/c/
000076154900003
Citation: Brysev A P, Krutyanskii L M, Preobrazhenskii V L "Wave phase conjugation of ultrasonic beams" Phys. Usp. 41 793–805 (1998)
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Оригинал: Брысев А П, Крутянский Л М, Преображенский В Л «Обращение волнового фронта ультразвуковых пучков» УФН 168 877–890 (1998); DOI: 10.3367/UFNr.0168.199808c.0877

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