Numerical modeling of stimulated Raman scattering in an astigmatic focus

Author

van den Heuvel, J.C.

Author_Institution

TNO Phys. & Electron. Lab., The Hague, Netherlands

Volume

28

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

378

Lastpage

385

Abstract

A two-dimensional finite difference method is presented for the propagation of beams focused by an astigmatic lens. The method is used for the modeling of a Raman amplifier that uses astigmatic lenses. The effect of gain focusing on the amplification is studied with this method. The numerical results show a good correspondence with analytical models in the range where these models are applicable. It is shown that an astigmatic focus in a Raman amplifier lessens the problems of optical breakdown and ground-state depletion, and enhances the conversion efficiency, compared to an ordinary focus

Keywords

Raman lasers; difference equations; focusing; laser accessories; lenses; stimulated Raman scattering; 2D; Raman amplifier modelling; SRS; astigmatic focus; astigmatic lens; conversion efficiency; finite difference method; focused beams propagation; gain focusing; ground-state depletion; optical breakdown; stimulated Raman scattering; Analytical models; Finite difference methods; Lenses; Nonlinear optics; Numerical models; Optical amplifiers; Optical scattering; Raman scattering; Semiconductor optical amplifiers; Stimulated emission;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.119538

Filename

119538