非线性外自聚焦透镜的几何光学特征  

Geometrical Optical Characteistics of Nonlinear External Self-focusing Lens

作　　者：林宗德[1] 李军[2] 杨亚文[1] 

机构地区：[1]上海师范大学物理系 [2]上海铁道学院基础部

出　　处：《应用激光》1991年第1期3-7,共5页Applied Laser

摘　　要：利用高斯光束在非线性介质中传布的稳态自聚焦理论以及高斯光束在线性介质中传布的ABCD 定律,计算了非线性外自聚焦透镜的焦距和束腰宽度。给出了焦距与束腰宽度同入射激光功率的依赖关系。对于研究非线性外自聚焦透镜的几何光学特征以及非线性光学器件的设计提供了更为普适的理论依据。In this paper,the focal length and Gaussian beamwidth of nonlinear external self-focusing lens are calculated by using the stationary self-focusing theory and ABCD theorem ofGaussian beam propagation.The dependence of focal length and beamwidth on incident laserpower are presented.It provides a more suitful theoretical basis for the studying of geometricaloptical characteristics of external self-focusing lens and application to nonlinear optical devicedesign.

关 键 词：透镜 自聚焦 非线性 几何光学 

分 类 号：TH740.3[机械工程—光学工程]