Spatial soliton by cascading x^((2)) effect and its self-induced wave-guide in quasi-phase-matched media  

作　　者：洪克柱 陈险峰 高光且 陈英礼 

机构地区：[1]Institute of Optics and Photonics, Dept. of Physics, Shanghai Jiaotong University, Shanghai 200347

出　　处：《Chinese Optics Letters》2003年第8期462-464,共3页中国光学快报（英文版）

摘　　要：The formation of the spatial solitons in the quadratic nonlinearity x(2) media by cascading second harmonic generation (SHG) in quasi-phase-matched (QPM) sample is studied on the basis of nonlinear Schrodinger equation (NLSE). When the solitary wave propagates in the QPM media, it formed optical wave-guides through cascading x(2) effect called self-induced soliton wave-guide. Transverse refractive index distribution of the self-induced soliton wave-guide of fundamental and SHG wave is obtained by cascading process. Analysis of guided-mode of such self-induced soliton wave-guide is first proposed to our knowledge. Because the power needed for forming the spatial solitons in cascading process is much lower than that in Kerr media, this kind of self-induced soliton wave-guide shows potential applications in all-optical signal process.The formation of the spatial solitons in the quadratic nonlinearity x(2) media by cascading second harmonic generation (SHG) in quasi-phase-matched (QPM) sample is studied on the basis of nonlinear Schrodinger equation (NLSE). When the solitary wave propagates in the QPM media, it formed optical wave-guides through cascading x(2) effect called self-induced soliton wave-guide. Transverse refractive index distribution of the self-induced soliton wave-guide of fundamental and SHG wave is obtained by cascading process. Analysis of guided-mode of such self-induced soliton wave-guide is first proposed to our knowledge. Because the power needed for forming the spatial solitons in cascading process is much lower than that in Kerr media, this kind of self-induced soliton wave-guide shows potential applications in all-optical signal process.

关 键 词：wave on of QPM Spatial soliton by cascading x effect and its self-induced wave-guide in quasi-phase-matched media in by 

分 类 号：O437[机械工程—光学工程] TN252[理学—光学]