5 . without making the paraxial approximation , a detailed study on the propagation of ultrashort pulsed bessel beams in linear normal and anomalous dispersive media has been performed using the method of fourier transform 未作近轴近似的条件下，用傅立叶积分变换法详细研究了超短脉冲贝塞尔光束在正、负色散介质中的传输特性。
Ideally , the voltage ’ s transmission efficiency of blumlein can reach to 100 percent , which is two times of the single pulse - forming line ’ s , so it will be applied widely in ultra - wideband source circuit 而且理想情况下双脉冲形成网络的电压传输效率可达到百分之百,是单形成线的2倍,使其将会在超短脉冲源产生电路中得到广泛应用。
The energy transmission along the axes is accord with the academic calculation . under simultaneity driven , the energy radiated by point source array increasing according to cell number is proved by experiment 超短脉冲单辐射器轴线上能量传播的实验与理论曲线几乎一致，同步激励时点源阵辐射的能量按单元数平方律增加得到了较好的实验验证。
Chapter 1 : the development of the investigation about the free - propagation of ultra - short pulsed beam is introduced , and the necessity of the investigation about the non - paraxial propagation of the ultra - short pulsed beam in free space is discussed 第一章：本章回顾了超短脉冲光束传输的研究进展并讨论了超短脉冲光束非傍轴传输研究的意义。
We have studied the propagating properties of ultrashort pulses in the clbo crystal , analyzed theoretically and simulated numerically the optical parametric properties of interaction between ultrashort pulses and the clbo crystal 论文完成了超短脉冲激光在clbo晶体中传播特性的分析，并对clbo晶体的超短脉冲参量特性进行了理论分析和数值模拟。
When the spatial parameter a is small , the non - paraxial effect does n ' t affect the temporal profile of the beam . however , when a becomes relatively larger , it influences the temporal profile greatly 当空间参数较小时超短脉冲贝塞尔光束的时间波形不受非近轴效应影响；然而当空间参数较大时，非近轴效应影响超短脉冲贝塞尔光束的时间波形。
