水中受激布里渊散射脉冲的反常压缩

张磊; 李金增

doi:10.7498/aps.63.054202

摘要

受激布里渊散射（SBS）具有脉冲压缩的特性，受激布里渊散射的脉冲宽度随着抽运能量的增大而变小，在水中可以达到几百皮秒的量级. 本文在实验上观察到一种受激布里渊散射的脉冲宽度随抽运能量增大而变大的现象，这里称之为反常压缩. SBS的脉冲反常压缩和脉冲压缩与抽运光的强弱会聚情况有关. 利用数值模拟，模拟了强弱会聚情况下抽运光在水中的传输规律，强弱会聚情况的抽运光对受激布里渊散射形成的有效增益长度不同：抽运光强会聚时有效增益长度短，形成SBS脉冲宽度的反常压缩；弱会聚时有效增益长度长，也就是正常的SBS脉冲压缩.

关键词:

Abstract

Pulse compression is an important property of stimulated Brillouin scattering (SBS), and the SBS pulse duration becomes smaller with the increase of pump energy. An unusual pulse compression was investigated of the stimulated Brillouin scattering in water, it was found that the SBS pulse duration becomes larger as the pump energy increases. The pulse duration of SBS alters differently with the change of pump energy in strong focusing and weak focusing. Numerical simulation of pump light transmission in water cell has been made to explain the unusual pulse compression phenomena. Different real gain lengths in strong and weak focusing make different SBS pulse compression.

Keywords:

作者及机构信息

张磊,
李金增

1.
中国科学院国家天文台, 北京 100012

Authors and contacts

1.
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China

参考文献

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施引文献

[1]	Shen R Y 1984 The Principles of Nonlinear Optics (New York: Wiley) Chap 11
[2]
[3]	Damzen M J, Vlad V I, Babin V, Mocofanescu A 2003 Stimulated Brillouin Scattering: Fundamentals and Applications (Bristol: IOP Publishing) Chap 10
[4]	Boyd R W 2004 Nonlinear Optics (New York: Academic Press) Chap 9
[5]
[6]	Armaud Brignon ed. 2003 Phase Conjugate Laser Physics (New York: John Wiley Sons) Chap 2-3
[7]
[8]
[9]	Kong H J, Lee S K, Lee D W, Guo H 2005 Appl. Phys. Lett. 86 051111
[10]	Sakai J I 1992 Phase Conjugate Optics (New York: McGraw-Hill) Chap 5-6
[11]
[12]
[13]	Deng S Y, Guo S F, Lu Q S, Cheng X A 2005 Acta Phys. Sin. 54 3164 (in Chinese) [邓少永, 郭少锋, 陆启生, 程湘爱 2005 物理学报 54 3164]
[14]
[15]	Chen W, Chen X G, Shi J L, He X D, Mo X F, Liu J 2013 Acta Phys. Sin. 62 4213 (in Chinese) [陈蔚, 陈学岗, 史久林, 何兴道, 莫小凤, 刘娟 2013 物理学报 62 4213]
[16]	Hasi W L J, L 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 物理学报 54 5654]
[17]
[18]	Kong H J, Lee S K, Lee D W, Guo H 2005 Appl. Phys. Lett. 86 051111
[19]
[20]
[21]	Hon D T 1980 Opt. Lett. 5 516
[22]
[23]	Shin J S, Park S, Kong H J, Yoon J W 2010 Appl. Phys. Lett. 96 131116
[24]	Guo Q, Lu Z W, Wang Y L 2010 Appl. Phys. Lett. 96 221107
[25]
[26]
[27]	Okawachi Y, Bigelow M S, Sharping J E, Zhu Z M, Schweinsberg A, Gauthier D J, Boyd R W, Gaeta1 A L 2005 Phys. Rev. Lett. 94 153902
[28]
[29]	Schneider T, Junker M, Lauterbach K U 2007 Opt. Lett. 32 220
[30]	Menzel R, Eichler H J 1992 Phys. Rev. A 46 7139
[31]
[32]	Zhang L, Zhang D, Li J Z 2013 Chin. Phys. B 22 4207
[33]
[34]
[35]	Shi J, Chen X, Ouyang M, Liu J, Liu D H 2009 Appl. Phys. B 95 657
[36]
[37]	Liu D H, Xu J F, Li R S, Dai R, Gong W P 2002 Opt. Commun. 203 335

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