Deformation of modulated wave groups in third-order nonlinear media |
| |
Authors: | Suryanto A Van Groesen E Hoekstra HJWM |
| |
Institution: | (1) MESA+ Research Institute, University of Twente, Enschede, The Netherlands |
| |
Abstract: | We present a numerical and analytical investigation of the deformation of a modulated wave group in third-order nonlinear media. Numerical results show that an optical pulse that is initially bichromatic can deform substantially with large variations in amplitude and phase. For specific cases, the bi-chromatic pulse deforms into a train of temporal solitons. Based on the coupled phase-amplitude equation of Nonlinear Schrödinger (NLS), the initial deformation of the modulated wave-packet will be explained and an instability condition can be derived. Energy arguments are given that provide an alternative derivation of the instability condition. |
| |
Keywords: | nonlinear Schrö dinger equation phase-amplitude equation dispersion trajectory nonlinear dispersion relation |
本文献已被 SpringerLink 等数据库收录! |