文献类型：期刊文献

中文题名：The damage of the optical components induced by the stimulated Brillouin scattering

英文题名：The damage of the optical components induced by the stimulated Brillouin scattering

作者：Ge, Zi-Ming[1]; Lü, Zhi-Wei[2]; Cai, Jun-Wei[1]; Ao, Shu-Yan[1]; Luo, You-Hua[1]

机构：[1]E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]Harbin Inst Technol, Inst Optoelect, Harbin 150001, Peoples R China

年份：2006

卷号：15

期号：10

起止页码：2343

中文期刊名：Chinese Physics B

外文期刊名：CHINESE PHYSICS

收录：CSTPCD;;EI(收录号：20064010140720);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000241002400025)】；CSCD:【CSCD2011_2012】；

基金：Project supported by the joint fund of the National Natural Science Foundation of China and the China Academy of Engineering Physics （Grant No 10076004）.

语种：英文

中文关键词：transient longitudinal SBS;damage of the optical glasses;ultrasound wave;intensity of acoustic wave

外文关键词：transient longitudinal SBS; damage of the optical glasses; ultrasound wave; intensity of acoustic wave

摘要：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 5cm 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.
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.