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建立了受激布里渊散射介质中热作用破坏的物理模型, 数值模拟了杂质颗粒的温度随其半径的变化曲线.结果显示,杂质颗粒存在一个最大热作用半径, 介质所含颗粒的尺寸在此半径附近时,介质最容易发生光学击穿现象, 其光学击穿阈值最低.在Continuum Nd: YAG种子注入式激光系统中,选取FC-3283, GF-180和HFE-7100介质, 通过不同孔径的过滤膜进行过滤,并研究了过滤前后的光学击穿阈值和能量反射率. 结果表明,随着过滤孔径的变小,介质光学击穿阈值逐渐提高, 且过滤之后介质的能量反射率有了明显的提高.介绍了一种利用He-Ne激光透射光光斑变化来判断是否发生光学击穿现象的方法,该方法具有方便、 准确的特点,可有效地减小由于肉眼观测引起的误差.In this paper, we establish the physical model of hot damage to the stimulated Brillouin scattering (SBS) medium, and with numerical simulation method the curve of the temperature of impurity particles versus the radius is investigated. The result indicates that impurity particle has a maximal thermal effect radius and when the sizes of particles contained in the medium are near the radius, the optical breakdown phenomenon is most likely to appear, and at this point the optical breakdown threshold is lowest. We use FC-3283, GF-180 and HFE-7100 as the SBS medium in Continuum Nd: YAG laser system. The SBS medium passes through the filter with different diameters. We study the optical breakdown thresholds and energy reflectivities before and after filtration. It is demonstrated that with the filter diameter decreasing, the optical breakdown threshold increases gradually and the energy reflectivity is significantly improved through filter. In addition, a method of using He-Ne laser transmission light spot size to judge whether optical breakdown phenomenon happens, is also developed. This method is convenient and accurate, and can effectively reduce the error caused by naked eye observation.
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Keywords:
- stimulated Brillouin scattering /
- SBS medium /
- impurity particles
[1] Yoshida H, Hatae T, Fujita H, Nakatsuka M, Kitamura S 2009 Opt. Express 17 13654
[2] Shi J, Chen X, Ouyang M, Liu J, Liu D 2009 Appl. Phys. B 95 657
[3] Hasi W L J, Lu H H, Fu M L, Gong S, Lü Z W, Lin D Y, He W M, Gao W 2009 Chin. Phys. B 18 5362
[4] Guo Q, Lü Z W, Wang Y L 2010 Appl. Phys. Lett. 96 221107
[5] Hasi W L J, Lü Z W, Lu H H, Fu M L, Gong S, Lin D Y, He W M, Gao W 2010 Appl. Phys. B 98 397
[6] Hasi W L J, Lü Z W, Fu M L, Lu H H, Gong S, Lin D Y, He W M 2009 Laser Part. Beams 27 533
[7] Komolov V L 1997 Proc. SPIE 3093 66
[8] Hasi W L J, Lü Z W, Li Q, Ba D X, Zhang Y, He W M 2006 Acta Phys. Sin. 55 5252 (in Chinese) [哈斯乌力吉, 吕志伟, 李强, 巴德欣, 张祎, 何伟明 2006 55 5252]
[9] Hasi W L J, Lü Z W, He W M, Li Q, Ba D X 2005 Acta Phys. Sin. 54 5654 (in Chinese) [哈斯乌力吉, 吕志伟, 何伟明, 李强, 巴德欣 2005 54 5654]
[10] Hasi W L J, Lü Z W, He W M, Wang S Y, Liu S N 2004 Chin. Opt. Lett. 2 718
[11] Mullen R A, Matossian J N 1990 Opt. Lett. 15 601
[12] Eichler H J, Menzel R, Sander R, Smandek B 1992 Opt. Commun. 89 260
[13] Krupka R, Giesen A 1996 Proc. SPIE 2870 528
[14] Hu P, Chen F L 2005 High Power Laser and Particle Beams 17 961 (in Chinese) [胡鹏, 陈发良 2005 强激光与粒子束 17 961]
[15] Yoshida H, Kmetik V, Fujita H, Nakatsuka M, Yamanaka T, Yoshida K 1997 Appl. Opt. 16 3739
[16] Hasi W L J, Lü Z W, Gong S, Liu S J, Li Q, He W M 2008 Appl. Opt. 47 1010
[17] Hasi W L J, Li X, Guo X Y, Lu H H, Lü Z W, Lin D Y, He W M, Fan R Q 2010 Acta Phys. Sin. 59 8554 (in Chinese) [哈斯乌力吉, 李杏, 郭翔宇, 鲁欢欢, 吕志伟, 林殿阳, 何伟明, 范瑞清 2010 59 8554]
[18] Hasi W L J, Li X, Guo X Y, Lu H H, Lü Z W, Lin D Y, He W M, Fan R Q 2011 Acta Phys. Sin. 60 034208 (in Chinese) [哈斯乌力吉, 李杏, 郭翔宇, 鲁欢欢, 吕志伟, 林殿阳, 何伟明, 范瑞清 2011 60 034208]
[19] Park H, Lim C, Yoshida H, Nakatsuka M 2006 Jpn. J. Appl. Phys. 45 5073
[20] Bravo I, Diaz-de-Mera Y, Aranda A, Smith K, Shinec K P, Marstond G 2010 Phys. Chem. Chem. Phys. 12 5115
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[1] Yoshida H, Hatae T, Fujita H, Nakatsuka M, Kitamura S 2009 Opt. Express 17 13654
[2] Shi J, Chen X, Ouyang M, Liu J, Liu D 2009 Appl. Phys. B 95 657
[3] Hasi W L J, Lu H H, Fu M L, Gong S, Lü Z W, Lin D Y, He W M, Gao W 2009 Chin. Phys. B 18 5362
[4] Guo Q, Lü Z W, Wang Y L 2010 Appl. Phys. Lett. 96 221107
[5] Hasi W L J, Lü Z W, Lu H H, Fu M L, Gong S, Lin D Y, He W M, Gao W 2010 Appl. Phys. B 98 397
[6] Hasi W L J, Lü Z W, Fu M L, Lu H H, Gong S, Lin D Y, He W M 2009 Laser Part. Beams 27 533
[7] Komolov V L 1997 Proc. SPIE 3093 66
[8] Hasi W L J, Lü Z W, Li Q, Ba D X, Zhang Y, He W M 2006 Acta Phys. Sin. 55 5252 (in Chinese) [哈斯乌力吉, 吕志伟, 李强, 巴德欣, 张祎, 何伟明 2006 55 5252]
[9] Hasi W L J, Lü Z W, He W M, Li Q, Ba D X 2005 Acta Phys. Sin. 54 5654 (in Chinese) [哈斯乌力吉, 吕志伟, 何伟明, 李强, 巴德欣 2005 54 5654]
[10] Hasi W L J, Lü Z W, He W M, Wang S Y, Liu S N 2004 Chin. Opt. Lett. 2 718
[11] Mullen R A, Matossian J N 1990 Opt. Lett. 15 601
[12] Eichler H J, Menzel R, Sander R, Smandek B 1992 Opt. Commun. 89 260
[13] Krupka R, Giesen A 1996 Proc. SPIE 2870 528
[14] Hu P, Chen F L 2005 High Power Laser and Particle Beams 17 961 (in Chinese) [胡鹏, 陈发良 2005 强激光与粒子束 17 961]
[15] Yoshida H, Kmetik V, Fujita H, Nakatsuka M, Yamanaka T, Yoshida K 1997 Appl. Opt. 16 3739
[16] Hasi W L J, Lü Z W, Gong S, Liu S J, Li Q, He W M 2008 Appl. Opt. 47 1010
[17] Hasi W L J, Li X, Guo X Y, Lu H H, Lü Z W, Lin D Y, He W M, Fan R Q 2010 Acta Phys. Sin. 59 8554 (in Chinese) [哈斯乌力吉, 李杏, 郭翔宇, 鲁欢欢, 吕志伟, 林殿阳, 何伟明, 范瑞清 2010 59 8554]
[18] Hasi W L J, Li X, Guo X Y, Lu H H, Lü Z W, Lin D Y, He W M, Fan R Q 2011 Acta Phys. Sin. 60 034208 (in Chinese) [哈斯乌力吉, 李杏, 郭翔宇, 鲁欢欢, 吕志伟, 林殿阳, 何伟明, 范瑞清 2011 60 034208]
[19] Park H, Lim C, Yoshida H, Nakatsuka M 2006 Jpn. J. Appl. Phys. 45 5073
[20] Bravo I, Diaz-de-Mera Y, Aranda A, Smith K, Shinec K P, Marstond G 2010 Phys. Chem. Chem. Phys. 12 5115
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