中国物理B ›› 2013, Vol. 22 ›› Issue (7): 74207-074207.doi: 10.1088/1674-1056/22/7/074207
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
张磊a, 张东b, 李金增a
Zhang Lei (张磊)a, Zhang Dong (张东)b, Li Jin-Zeng (李金增)a
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 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.
中图分类号: (Stimulated Brillouin and Rayleigh scattering)