Effect of water temperature on pulse duration and energy of stimulated Brillouin scattering

被引：3
|
作者：
Zhang Lei [1 ]
Zhang Dong [2 ]
Li Jin-Zeng [1 ]
机构：
[1] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
[2] Shanghai Inst Measurement & Testing Technol, Shanghai 201203, Peoples R China
来源：
CHINESE PHYSICS B | 2013年 / 22卷 / 07期
关键词：
stimulated Brillouin scattering; pulse duration and energy; water temperature; phonon lifetime; COMPRESSION; LIQUID;
D O I：
10.1088/1674-1056/22/7/074207
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The water temperature has a strong effect on the kinematic viscosity, which is inversely proportional to the phonon lifetime and the gain coefficient. The higher the temperature is, the smaller the kinematic viscosity is, and the larger the phonon lifetime is. At a low pump power and a short focal length, we can derive a single-peak stimulated Brillouin scattering (SBS) pulse. The duration of this single-peak SBS pulse depends mainly on the phonon lifetime of water. With the increase of the water temperature, the duration of such a single-peak SBS pulse will become longer, and the SBS energy will become higher for the gain coefficient, which is related to the phonon lifetime. Therefore, varying the medium temperature can lead to the changes of SBS pulse duration and SBS energy.
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页数：3
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