| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Effect of water temperature on pulse duration and energy of stimulated Brillouin scattering |
| Zhang Lei (张磊)a, Zhang Dong (张东)b, Li Jin-Zeng (李金增)a |
a National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;
b Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, China |
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Abstract 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 raise 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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Received: 29 November 2012
Revised: 14 January 2013
Accepted manuscript online:
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PACS:
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42.65.Es
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(Stimulated Brillouin and Rayleigh scattering)
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78.35.+c
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(Brillouin and Rayleigh scattering; other light scattering)
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42.62.Eh
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(Metrological applications; optical frequency synthesizers for precision spectroscopy)
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Corresponding Authors:
Zhang Lei
E-mail: zhanglei@nao.cas.cn
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Cite this article:
Zhang Lei (张磊), Zhang Dong (张东), Li Jin-Zeng (李金增) Effect of water temperature on pulse duration and energy of stimulated Brillouin scattering 2013 Chin. Phys. B 22 074207
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