In chapter 1, we introduce the meaning and the history of the study about modulation instability 第一章:前言,介紹了調(diào)制不穩(wěn)定性研究的意義和進(jìn)展。
In this thesis the gain spectrum of modulation instability ( mi ) is calculated theoretically, and the mi in different ddf is studied . then pulse's evolvement in different ddf is simulated by means of numerical method 本文理論上推導(dǎo)了ddf中調(diào)制不穩(wěn)定性的增益譜,研究了不同剖面ddf的調(diào)制不穩(wěn)定性,并采用數(shù)值方法計(jì)算了脈沖在各種剖面的ddf中傳輸性能。
Firstly, the propagation of intense laser light in ionizing gases is analyzed including the ionization-modulation instability, the vectorial and nonparaxial effects, and the mechanism of laser energy loss . secondly, we analyze the propagation of intense laser light in plasmas, and effects such as the weakly relativistic nonlinearity, the ponderomotive force and the wakefield are analyzed 文中對(duì)強(qiáng)激光在電離氣體中傳輸?shù)碾婋x不穩(wěn)定性、矢量非傍軸傳輸和能量損耗機(jī)制,以及強(qiáng)激光在等離子體中傳輸?shù)娜跸鄬?duì)論性非線性效應(yīng)、有質(zhì)動(dòng)力作用和尾波場效應(yīng)等都作了基本的分析。
The propagation of soliton and interaction for the periodic distributed amplification line are discussed in detail, and the explicit soliton solution on continuous wave ( cw ) background is presented, and two exact analytic solutions that describe the modulation instability and the soliton propagation on a cw background are in detail discussed, and inelastic interaction for the vector solitons is also investigated 具體研究如下三個(gè)方面的內(nèi)容:周期分布放大系統(tǒng)中孤子的傳輸特性和相互作用;在非零邊界條件下孤子解的存在形式并解釋非均勻光纖中光脈沖的調(diào)制不穩(wěn)定性以及孤子在連續(xù)波背景中的傳輸特性;討論多個(gè)光場同時(shí)在光纖中傳輸?shù)鸟詈戏蔷鶆蚍蔷€性薛定諤方程并詳細(xì)研究孤子間的非彈性相互作用。