Titre :

Nonlinear acoustics of phase conjugate ultrasound beams

Auteur(s) :

Preobrazhensky, Vladimir [Auteur]
A. M. Prokhorov General Physics Institute [GPI]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Pernod, Philippe [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Bunkin, Fedor V. [Auteur]
A. M. Prokhorov General Physics Institute [GPI]
Brysev, Andrey [Auteur]
A. M. Prokhorov General Physics Institute [GPI]
Krutyansky, Leonid [Auteur]
A. M. Prokhorov General Physics Institute [GPI]
Pyl'Nov, Yury [Auteur]
Preobrazhensky, S. [Auteur]

Titre de la manifestation scientifique :

Ten years of russian-french collaboration, Joint Workshop of Russian Acoustical Society (RAS) and French Acoustical Society (SFA) as part of XVI Meeting of Russian Acoustical Society

Ville :

Moscow

Pays :

Russie

Date de début de la manifestation scientifique :

2005-11-14

Date de publication :

2005

Discipline(s) HAL :

Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

Overview of nonlinear acoustics of phase conjugate waves (PCW) - the new domain of physical acoustics created by the participants of the Joint Russian-French laboratory LEMAC is presented. The original magneto-acoustic ...
Lire la suite >Overview of nonlinear acoustics of phase conjugate waves (PCW) - the new domain of physical acoustics created by the participants of the Joint Russian-French laboratory LEMAC is presented. The original magneto-acoustic technique of supercritical parametricwave phase conjugation (WPC) is used as a basic method of generation of high intensity PCW. The results of experimental and theoretical studies of nonlinear propagation andinteraction of PCW in liquids are considered. Compensation of phase distortions and highquality retro-focusing of PCW in nonlinear and inhomogeneous media in conditions of break of time reversal invariance (TRI) are observed experimentally and describedtheoretically. Selective WPC of the harmonics of nonlinear beams and its application forharmonic imaging are demonstrated on an example of the nonlinear acoustic microscopy. Detection of nonlinear inhomogeneities by means of WPC is described. Low frequencywave generation by nonlinear interaction of high frequency PCW and its use forvelocimetry of scattering objects in liquid are discussed. Applications of TRI break forultrasonic WPC- imaging of flows and the advantages of nonlinear modes of flow imagingare demonstratedLire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL