Dark Spatial Solitary Wave Due to Cascaded x(2) Nonlinearity
The formation of the dark spatial solitary wave in cascaded second harmonic generation processes is numerically studied based on the nonlinear-coupled equations. It is shown that the solitary wave exists when the effective three-order nonlinearity induced by cascaded second-order nonlinearity is negative.
作 者： GAO Guan-Qie CHEN Xian-Feng CHEN Yu-Ping WANG Fei-yu XIA Yu-Xing 作者单位： Institute of Optics and Photonics, Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China 刊 名： 理论物理通讯(英文版) ISTIC SCI 英文刊名： COMMUNICATIONS IN THEORETICAL PHYSICS 年，卷(期)： 2004 42(7) 分类号： 关键词： cascaded nonlinearity dark spatial soliton