Faculty and Staff Publications

Document Type

Article

Publication Date

8-1-1994

Abstract

Stimulated Brillouin scattering is investigated here under conditions characterized by high optical pump intensity. Calculations are carried out at 1.3 and 3.8 /jm with pump intensities equal to approximately three times the threshold. Such strong optical forcing leads to significant self-distortion of the density profile in the material wave serving as the optical grating. The method of multiple scales is used to find a uniform asymptotic expansion in the coupling. At the first perturbation level the resonant portion of the problem yields abridged equations for the incident and the scattered waves with frequencies CWaLn d ws = L - 0 and for the grating and its harmonics with frequencies nfl. The nonresonant portion of the first perturbation yields field components with the frequencies WL + nfl and cos - nfl for n = 1, 2,.... Numerical solutions of the truncated abridged system are found by a method of Chebychev collocation and indicate a reduction in the observed phonon lifetime and a broadening of the linewidth with increasing amplitude.

Publisher

Optical Society of America

Publication Title

Journal of the Optical Society of America B

ISSN

0740-3224

Volume

11

Issue

8

First Page

1367

Last Page

1373

Language (ISO)

English

Sponsorship

This paper was published in Journal of the Optical Society of America B and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/view_article.cfm?gotourl=http%3A%2F%2Fwww%2Eopticsinfobase%2Eorg%2FDirectPDFAccess%2F5EC72E3F%2DA2ED%2D35C8%2D689DDAF1AD4FBFF1%5F7656%2Epdf%3Fda%3D1%26id%3D7656%26seq%3D0%26mobile%3Dno&org=University%20of%20New%20Mexico%20. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Included in

Mathematics Commons

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