https://doi.org/10.1140/epjd/s10053-023-00625-5
Regular Article – Optical Phenomena and Photonics
Stimulated Brillouin scattering in an inhomogeneous amplifier cell: a self-consistent solution approach
1
Plasma and Fusion Research School, Nuclear Science and Technology Research Institute, Tehran, Iran
2
Photonics and Quantum Technologies Research School, Nuclear Science and Technology Research Institute, Tehran, Iran
Received:
23
July
2022
Accepted:
28
February
2023
Published online:
4
April
2023
In this paper, the amplification of the injected Stokes wave in inhomogeneous media has been studied. Numerical calculations based on a self-consistent solution of the Maxwell equations for the electric fields and the Navier–stokes equation for the acoustic fields are used to explain the amplification of the Stokes waves. To consider inhomogeneous media, the SBS amplifier cell is divided into several parts by transparent thin surfaces with uniform density distribution. This process was applied to several configurations of SBS gain factor changes in the cell, including exponential and linear changes in Brillouin gain factor according to the subdivision within the cell, and the results were compared. The results show that the length of the medium plays an essential role in the growth of SBS performance. Also, by the optimum selection of the gain profile, a non-uniform gas pressure distribution in the SBS cell can improve the energy reflectivity and the optical breakdown threshold.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
