title: Phase conjugation with a single bubble.
abstract: It is recalled how the nonlinear interaction between a gas bubble and an external extra pressure can yield phase conjugation. Using the Glauber representation, we show that the effect of the latter is formally analogous to that of a pi pulse in nuclear magnetic resonance, so that the acoustic equivalent of spin echoes may be expected in a bubble cloud. An experimental attempt to observe phase conjugation is reported in the single-bubble case.
authors.affiliation: Laboratoire Matière et Systèmes Complexes, Université Denis Diderot-Paris 7, 140 rue de Lourmel, 75015 Paris, France. valentin.leroy@loa.espci.fr
authors.forename: Valentin
authors.initials: V
authors.lastname: Leroy
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Bacri
authors.forename: Thierry
authors.initials: T
authors.lastname: Hocquet
authors.forename: Martin
authors.initials: M
authors.lastname: Devaud