Investigation of Transient Brillouin Scattering in Optical Fibers Under Pulsed Beam Excitation

Date of Award

12-1-2023

Degree Name

M.C.S. (Master of Computer Science)

Department

Department of Computer Science

Advisor/Chair

Advisor: Imad Agha

Abstract

There are an increasing number of applications for high power lasers in medicine, industry and the military. Fiber lasers present an attractive alternative to traditional laser types; however, when operating at high power levels, fiber lasers are subject to detrimental nonlinear effects. Stimulated Brillouin scattering (SBS) is a nonlinear acousto-optic interaction where a stimulated acoustic wave scatters light, which limits the laser output. This thesis presents a theoretical and experimental framework for Brillouin scattering in continuous wave and pulsed beam regimes. Stimulated Brillouin scattering was observed in optical fibers in stationary and transient beam excitations and Brillouin frequencies are presented for different optical fibers with pulsed beam widths ranging from 15 ns to 500 ns.

Keywords

Brillouin, Brillouin Scattering, Transient Brillouin Scattering, Nonlinear Optics, SBS, TBS

Rights Statement

Copyright © 2023, author.

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