Thermal suppression of high-repetition rate SBS pulse compression in liquid media

Author:

Wang Hongli1ORCID,Seongwoo Cha1ORCID,Kong Hong Jin1,Wang Yulei2,Lu Zhiwei2

Affiliation:

1. Korea Advanced Institute of Science and Technology

2. Hebei University of Technology

Abstract

Thermal problems of high-repetition-rate stimulated Brillouin scattering (SBS) pulse compression in liquid media are theoretically and experimentally analyzed in detail. A wedge lens with less coma-aberration was designed using the ray tracing method and the thermally induced beam-pattern distortion was compensated by inhibiting thermal convection. The heat transfer form and fluid state were quantitatively analyzed for different SBS liquid media. For a 74-W pump power, 3-kHz pulse-compressed phase-conjugation mirror with an energy efficiency of 36.2% is achieved. A potential optimization method of continuously adjusting SBS output characteristics using a mixed medium is proposed and theoretically demonstrated, to improve energy efficiency.

Funder

National Natural Science Foundation of China

Fundamental Research program of Shanxi Province

Shanxi Scholarship Council of China

Scientific and Technological Innovation Programs in Shanxi

2021 China-Korea Young Scientist Exchange Program

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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