Observation of ultrasonic waves in liquid under overthreshold parametric phase conjugation in ferrite

A phase-conjugate sound wave of 6 MHz generated by a ferrite under parametric pumping by a magnetic field which exceeds the absolute instability threshold is studied in water. A correspondence of phase front images for incident and conjugate sound waves is obtained. An angular anisotropy of the effe...

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Bibliographic Details
Published in:Physics letters. A 1992-04, Vol.164 (2), p.196-200
Main Authors: Krutiansky, L.M., Preobrazhensky, V.L., Pyl'nov, Yu.V., Brysev, A.P., Bunkin, F.V., Stakhovsky, A.D.
Format: Article
Language:English
Subjects:
Acoustical properties of liquids
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Mechanical and acoustical properties of condensed matter
Physics
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Summary:A phase-conjugate sound wave of 6 MHz generated by a ferrite under parametric pumping by a magnetic field which exceeds the absolute instability threshold is studied in water. A correspondence of phase front images for incident and conjugate sound waves is obtained. An angular anisotropy of the effect is found and studied. A method for smoothing it out is proposed.
ISSN:0375-9601
1873-2429
DOI:10.1016/0375-9601(92)90702-N