节点文献

Hollow Gaussian beams in strongly nonlocal nonlinear media

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具，请取消加速工具后下载。

【作者】 杨振军； 陆大全； 胡巍； 郑一周； 高星辉；

【Author】 Yang Zhen-Jun,Lu Da-Quan,Hu Wei ,Zheng Yi-Zhou,and Gao Xing-Hui Laboratory of Photonic Information Technology,South China Normal University,Guangzhou 510631,China

【机构】 Laboratory of Photonic Information Technology,South China Normal University；

【摘要】 The propagation of hollow Gaussian beams in strongly nonlocal nonlinear media is studied in detail.Two analytical expressions are derived.For hollow Gaussian beams,the intensity distribution always evolves periodically.However the second-order moment beam width can keep invariant during propagation if the input power is equal to the critical power.The interaction of two hollow Gaussian beams and the vortical hollow Gaussian beams are also discussed.The vortical hollow Gaussian beams with an appropriate topological charge can keep their shapes invariant during propagation.

【Abstract】 The propagation of hollow Gaussian beams in strongly nonlocal nonlinear media is studied in detail.Two analytical expressions are derived.For hollow Gaussian beams,the intensity distribution always evolves periodically.However the second-order moment beam width can keep invariant during propagation if the input power is equal to the critical power.The interaction of two hollow Gaussian beams and the vortical hollow Gaussian beams are also discussed.The vortical hollow Gaussian beams with an appropriate topological charge can keep their shapes invariant during propagation.

【关键词】 strong nonlocality； hollow Gaussian beam； beam propagation；
【Key words】 strong nonlocality； hollow Gaussian beam； beam propagation；
【基金】 Project supported by National Natural Science Foundation of China (Grant Nos. 10804033 and 10674050);Program for Innovative Research Team of Higher Education of Guangdong Province of China (Grant No. 06CXTD005);the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 200805740002);the Natural Science Foundation of Hebei Province of China (Grant No. F2009000321)
  • 【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2010年12期
  • 【分类号】O437
  • 【下载频次】24
打印本页
节点文献中：