[1]潘雯,陶红,顾兵,等.帽顶光束Z扫描特征曲线的非对称参量[J].南京师大学报(自然科学版),2007,30(02):42-46.
　Pan Wen,Tao Hong,Gu Bing.Asymmetry Parameter of the Z-Scan Traces Using Top-Hat Laser Beam[J].Journal of Nanjing Normal University(Natural Science Edition),2007,30(02):42-46.
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帽顶光束Z扫描特征曲线的非对称参量()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第30卷
期数:
2007年02期
页码:
42-46
栏目:
物理学
出版日期:
2007-06-30

文章信息/Info

Title:
Asymmetry Parameter of the Z-Scan Traces Using Top-Hat Laser Beam
作者:
潘雯;陶红;顾兵;
南京师范大学物理科学与技术学院, 江苏南京210097
Author(s):
Pan Wen; Tao Hong; Gu Bing
School of Physical Science and Technology,Nanjing Normal University,Nanjing 210097,China
关键词:
非线性光学;  Z扫描;  非对称参量;  非线性折射
Keywords:
non linear optics;  Z-scan technique;  asymm etry param eter;  non linear refraction
分类号:
O437
摘要:
研究了描述帽顶光束Z扫描曲线峰谷相对大小的非对称参量A随远场光阑的线性透过率S和三阶非线性折射相移Φ1之间的变化关系.结果表明对于光克尔介质,当S=0.156时,帽顶光束Z扫描特征曲线的峰高等于谷低且与三阶非线性折射相移Φ1无关,实验中取这一特殊值S,可以很方便地对测量的结果进行归一化处理.此外,分析了高阶非线性效应对非对称参量A的影响,发现当S=0.156时,可以从单一Z扫描特征曲线来判断非线性光学介质是否具有高阶非线性效应以及高阶非线性系数的符号.
Abstract:
The re la tionsh ip of the asymm e try param eterA, w hich is the ratio of the re lative m agn itudes of the peak and va lley for theZ-scan traces using top-hat spatia l pro file beam, w ith the linear transm ittance o f the far-fie ld ape rture S and the th ird-order non linear refractiv e phase shift φ 1, w as investig ated in de ta i.l For the Kerr op tica l non linear medium A = 1, imp ly ing that the re la tivem agnitude of va lley is equa l to the peak’ s, is independence o f φ 1 a tS = 0.156. Tak ing this pa rticularly v alue S, it is easy to norm a l ize the Z-scan traces from the exper im enta l v iewpo int. The influence o f the high order non linear ity on A w as also analyzed. A new m ethod, wh ich could iden tify whether the sam ple exh ibits the higher-orde r non linearity o r not and its sign from a single top-ha tZ-scan trace, was introduced.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 江苏省高校自然科学基金( 06KJB140057)资助项目.
作者简介: 潘  雯( 1965 ) , 女, 实验师, 主要从事普通物理实验的教学与研究. E-m ail:panwen1@ n jnu. edu. cn
更新日期/Last Update: 2013-05-05