Stimulated Brillouin scattering in plastics

descriptionPublicationkeyboard_double_arrow_right Article 01 Sep 1972 English Publisher:AIP PublishingJournal:Journal of Applied Physics, volume 43, pages 3,631-3,636 (issn: 0021-8979, eissn: 1089-7550,

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Authors: D. R. Dietz; T. A. Wiggins;

doi: 10.1063/1.1661780

Stimulated Brillouin scattering in plastics

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Abstract

Hypersound speeds, the power threshold for stimulated Brillouin scattering (SBS), steady-state and transient gains for SBS, and the phonon lifetime have been studied in the plastics of polymethylmethacrylate and polyethylmethacrylate as a function of temperature. Damage thresholds were investigated and the effects of annealing are discussed. An extension of current theory allows a determination of phonon lifetimes and relative gains to be determined without absolute calibration of the laser power.

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Pennsylvania State University
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