Autostabilisation de la phase acoustique dans un miroir Brillouin invers{\'e} en pr{\'e}sence d'une forte dispersion acoustique

TL;DR

This paper explores a counter-intuitive stimulated Brillouin scattering regime where the pump wave stabilizes the acoustic wave by absorbing phase defects, leading to a narrower acoustic spectrum and enhanced stability.

Contribution

It introduces a novel regime of stimulated Brillouin scattering where the pump wave stabilizes the acoustic wave through phase defect absorption.

Findings

Nonlinear self-stabilization of the acoustic wave observed.

Significant narrowing of the acoustic spectrum achieved.

Enhanced stability of the Brillouin process demonstrated.

Abstract

We consider a counter-intuitive regime of stimulated Brillouin scattering in which the pump wave absorbs the phase defects of the Stokes wave, yielding a nonlinear self-stabilisation of the acoustic wave and a narrowing of the acoustic spectrum