Phase conjugation with a single bubble.
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.
Leroy
Valentin
V
Laboratoire Matière et Systèmes Complexes, Université Denis Diderot-Paris 7, 140 rue de Lourmel, 75015 Paris, France. valentin.leroy@loa.espci.fr
Bacri
Jean-Claude
JC
Hocquet
Thierry
T
Devaud
Martin
M