中国物理B ›› 2006, Vol. 15 ›› Issue (12): 2970-2976.doi: 10.1088/1009-1963/15/12/034
胡勇华, 傅喜泉, 文双春, 苏文华, 范滇元
Hu Yong-Hua(胡勇华), Fu Xi-Quan(傅喜泉)†, Wen Shuang-Chun(文双春), Su Wen-Hua(苏文华), and Fan Dian-Yuan(范滇元)
摘要: In this paper a comprehensive framework for treating the nonlinear propagation of ultrashort pulse in metamaterial with dispersive dielectric susceptibility and magnetic permeability is presented. Under the slowly-evolving-wave approximation, a generalized (3+1)-dimensional wave equation first order in the propagation coordinate and suitable for both right-handed material (RHM) and left-handed material (LHM) is derived. By the commonly used Drude dispersive model for LHM, a (3+1)-dimensional nonlinear Schr?dinger equation describing ultrashort pulsed beam propagation in LHM is obtained, and its difference from that for conventional RHM is discussed. Particularly, the self-steeping effect of ultrashort pulse is found to be anomalous in LHM.
中图分类号: (Other nonlinear optical materials; photorefractive and semiconductor materials)