摘要
利用无像差自聚焦理论研究了梯度折射率非线性 Kerr介质中高斯光束的传输特性 ,得到了高斯光束光斑半径和波面曲率半径的表达式。解析结果清楚地表明了衍射、自聚焦以及梯度折射率效应之间的竞争对高斯光束传输行为的影响。梯度折射率效应使光束自聚焦的距离缩短。
WT5”BZ]The propagation property of Gaussian beam traveling through graded index media with Kerr nonlinearity is investigated using the aberrationless theory of self focusing. Expressions for the spot size and the beam radius of curvature of Gaussian beam are obtained. It is shown that the propagation property of Gaussian beams depends on the competition between the diffraction effect and the combined effect of nonlinearity and graded index. The graded index tends to shorten the self focusing distance. [WT5”HZ]
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2000年第6期657-660,共4页
High Power Laser and Particle Beams
基金
国家863惯性约束聚变领域资助课题(863-416-5)
关键词
高斯光束
梯度折射率
自聚焦
非线性传输
Gaussian beam
graded-index
self-focusing
nonlinear propagation