首页 | 本学科首页   官方微博 | 高级检索  
     检索      


The damage of the optical components induced by the stimulated Brillouin scattering
Authors:Ge Zi-Ming  Lii Zhi-Wei  Cai Jun-Wei  Ao Shu-Yan  Luo You-nua
Institution:East China University of Science and Technology, Department of Physics, Shanghai 200237, China; Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150001, China
Abstract:A theory of excitation of ultrasonic waves in the stimulated Brillouin scattering (SBS) process is presented in this paper. By using several reasonable approximations, a numerical calculation of the transient longitudinal SBS shows that large amplitude of acoustic waves can be built up by the nanosecond pulse of high-power laser, which may result in the damage of optical glasses. The maximal density change and the maximal acoustic wave intensity in optical glasses of 5\,cm in thickness are calculated by using different parameters of the high-energy laser, such as the intensity, the pulse width, and the wave length. The damage threshold of the optical glasses is about 80 GW/cm^{2} when using a 1064 nm laser. The dynamic mechanism of SBS is the electrostriction effect of the components coupling with the high-power laser.
Keywords:transient longitudinal SBS  damage of the optical glasses  ultrasound wave  intensity of  hbox{\hskip 1  9cm} acoustic wave
本文献已被 维普 等数据库收录!
点击此处可从《中国物理 B》浏览原始摘要信息
点击此处可从《中国物理 B》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号