On the first order dynamics of subphonon lifetime transient stimulated Brillouin scattering

•A detailed analysis of the acoustic field dynamics resulting from the optical excitation in SBS is presented.•The resonant behavior of the phonon response guaranties the validity of the SVA in the subphonon lifetime regime.•We describe the detailed impact of the SVA for the phonon field in the mode...

Full description

Saved in:
Bibliographic Details
Published in:Optical fiber technology 2021-09, Vol.65, p.102592, Article 102592
Main Authors: Chamorro-Posada, P., Bengoechea de la Llera, J.
Format: Article
Language:English
Subjects:
Brillouin scattering
Fast and slow light
Nonlinear optics
Optical amplification
Optical fiber sensors
Optical pulse compression
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•A detailed analysis of the acoustic field dynamics resulting from the optical excitation in SBS is presented.•The resonant behavior of the phonon response guaranties the validity of the SVA in the subphonon lifetime regime.•We describe the detailed impact of the SVA for the phonon field in the modeling of SBS.•We set the precise limits of validity of the SVA. In this work, we address the phonon dynamics in the stimulated Brillouin scattering process. There exists a wide consensus on the fact that the slowly varying approximation for the acoustic field cannot be invoked in the transient subphonon regime. We present an analysis where we set the precise limits of validity of this approximation. Our study shows that the resonant behavior of the Stokes interaction permits, in general, a first order treatment of this process in the theoretical analysis of current practical applications. An improved-accuracy first order model is also put forward. Numerical calculations are used to support our conclusions.
ISSN:1068-5200
1095-9912
DOI:10.1016/j.yofte.2021.102592