pulse propagation中文什么意思

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1. Chapter5 : the effect of cross - phase modulation ( xpm ) on pulse propagation and sc spectrum generation in a dispersion - flattened and decreasing fiber are researched . it is found that xpm could enhance the sc spectrum generation and increase the generation efficiency
   研究结果表明，交叉相位调制效应对超连续谱的产生起到增强的作用，提高了超连续谱产生的效率。
2. Ultrashort intense laser pulse propagation in low - density plasmas and air xiao yuan , doctor of philosophy , 2002 dissertation advised by : lu baida , professor of physics the study of ultrashort intense pulse laser beams in low - density plasmas and air is relevant to a wide range modern application
   超短超强脉冲激光在低密度等离子体和空气中的非线性传输是当今强激光与物质相互作用研究的一个重要课题。本论文阐述了超短超强激光在低密度等离子体和空气中的长距离自聚焦和自导引效应。
3. Using the variational method , analytical conditions for stationary pulse propagation in dense period fibers with strong dispersion management are deduced . the expression of initial soliton peak power is given . by employing the obtained formulas , the soliton evolution semi - analytically in various dispersion maps can be investigated . effects of the third order dispersion are also studied in this paper . the results show that imperfect dispersion slope compensation can cause pulse central position shift and even serious degradation of soliton shape
   利用变分方法,推导出了在强色散管理的密集周期光纤中脉冲稳态传输的解析条件,并给出了初始脉冲峰值功率的表达式.运用这些公式,对各种色散管理系统中孤子的演化进行了半解析的考察.三阶色散也被考虑在内.结果表明:不完善的色散斜率补偿将导致脉冲中心位置的偏移甚至严重的孤子形状劣化
4. We also compared the effects of positive and negative third - order dispersion working with srs . the result shows that the effect of negative third order dispersion working with srs is more suitable for pulse propagation and compression . as a result , we proposed two methods to facilitate the propagation of optical pulse in nolm , and hence provided a theoretic guidance to the better design of eight - figure fiber laser
   并且通过比较正、负三阶色散分别与拉曼散射效应的相互作用对飞秒脉冲传输特性的影响，发现脉冲拉曼散射与负的三阶色散相互作用更有利于飞秒脉冲的传输与压缩，从而提出了改善了飞秒光脉冲在环形腔中的传输特性的两种方法，进而为“ 8 ”字形光纤激光器的优化设计提供了理论指导。