强非局域非线性介质中的涡旋光孤子  

Optical vortex solitons in strongly nonlocal nonlinear media

作　　者：戴继慧[1] 郭旗[1] 史信荣[1] 

机构地区：[1]华南师范大学光子信息技术实验室,广州510631

出　　处：《物理学报》2007年第8期4642-4647,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10474023;10674050);高等学校博士学科点专项科研基金(批准号:20060574006);广东省自然科学基金(批准号:05005918)资助的课题.

摘　　要：满足强非局域条件时,光束在非局域非线性介质的传输过程由Snyder-Mitchell模型描述.在旋转柱坐标系下求解了Snyder-Mitchell模型,得到涡旋光孤子的自相似旋转解析解.结果表明,涡旋光孤子解在径向是惠特克函数与幂函数的乘积,光束的光强呈环形分布,光束绕光束中心旋转.We solved the equations of the Snyder-Mitchell model, which is a model describing the propagation of optical beams in nonlocal nonlinear media with strong nonlocality, in a rotating cylindrical coordinate system, and obtained a self-similar analytical solution of an optical vortex soliton. The result shows that the radial part of the solution is the product of the Whittaker and power function. The beam has a ring-shaped structure rotating around its core.

关 键 词：非局域非线性介质 强非局域性 涡旋光孤子 惠特克函数 

分 类 号：O437[机械工程—光学工程]