搜索

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

光学击穿对受激布里渊散射特性的影响

哈斯乌力吉 吕志伟 何伟明 李 强 巴德欣

引用本文:
Citation:

光学击穿对受激布里渊散射特性的影响

哈斯乌力吉, 吕志伟, 何伟明, 李 强, 巴德欣

Influences of optical breakdown on stimulated Brillouin scattering

Hasi Wu-Li-Ji, Lü Zhi-Wei, He Wei-Ming, Li Qiang, Ba De-Xin
PDF
导出引用
  • 把雪崩电离模型引入受激布里渊散射模型中,数值模拟了无光学击穿和有光学击穿时受激布里渊散射能量反射率随输入光功率密度的变化规律.实验上选取净化和未净化的CCl4作为散射介质,在Nd:YAG调Q激光系统中进行了验证,理论与实验符合得很好.结果表明:当无光学击穿时,随着输入光功率密度的增大,能量反射率先是非线性增大,然后缓慢增大趋于饱和;而当有光学击穿时,随着输入光功率密度的增大,能量反射率先是非线性增大,达到最高值之后开始下降,最终趋于零.无光学击穿时的能量反射率及其稳定度明显高于有光学击穿时的情况.
    Avalanche ionization model is introduced to the coupled stimulated Brillouin scattering (SBS) equations. Numerical simulation of SBS energy reflectivity as a function of pump intensity is made with and without the optical breakdown factor in the equations. In the experiment, purified and unpurified CCl4 media are studied with an Nd:YAG laser system with Q switch, the results are found to agree well with the numerical solutions. It is observed that under conditions that the optical breakdown does not occur, the energy reflectivity increases nonlinearly with pump intensity until reaching a certain value above which it tends to grow slowly. In cases with the breakdown, the energy reflectivity first increases nonlinearly with the pump intensity to a peak value and then decreases dramatically as optical breakdown occurs. The stability of energy reflectivity in the cases without optical breakdown is obviously better than cases otherwise.
    • 基金项目: 国家自然科学基金(批准号:10476009,60478020,60278033)资助的课题.
计量
  • 文章访问数:  7112
  • PDF下载量:  1022
  • 被引次数: 0
出版历程
  • 收稿日期:  2005-03-15
  • 修回日期:  2005-06-15
  • 刊出日期:  2005-06-05

/

返回文章
返回