Enhanced stimulated Raman scattering in temperature controlled liquid water

The dependence of single pass stimulated Raman scattering (SRS) in liquid water on temperature was investigated. Thermal self-defocusing and competition with backward stimulated Brillouin scattering were found to be the major limiting factors for forward SRS (FSRS) generation. Experiments were perfo...

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Bibliographic Details
Published in:Applied physics letters 2014-08, Vol.105 (6)
Main Authors: Ganot, Yuval, Shrenkel, Shmuel, Barmashenko, Boris D., Bar, Ilana
Format: Article
Language:English
Subjects:
Applied physics
Computer simulation
Defocusing
Dependence
Energy conversion efficiency
Liquid cooling
Raman spectra
Water
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Summary:The dependence of single pass stimulated Raman scattering (SRS) in liquid water on temperature was investigated. Thermal self-defocusing and competition with backward stimulated Brillouin scattering were found to be the major limiting factors for forward SRS (FSRS) generation. Experiments were performed to show that water cooling reduces these factors, resulting in significant enhancement of the FSRS and leading to a maximum conversion efficiency of 35% for pump energy of 120 mJ/pulse and for water at a temperature of 4 °C. Computer simulations of the involved waves resulted in FSRS efficiencies agreeing well with the experimental ones.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4893001