Effect of water temperature on pulse duration and energy of stimulated Brillouin scattering |
| |
| Authors: | Zhang Lei Zhang Dong and Li Jin-Zeng |
| |
| Institution: | [1]National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China [2]Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, China |
| |
| 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 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. |
| |
| Keywords: | stimulated Brillouin scattering pulse duration and energy water temperature phonon lifetime |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
