Biology and chemislry etal ln thi s dissertation , the theory of femto - second pulse laser amplifier system using tifsapphire crystal was discussed systematically and many methods were brought fonvard to resoive the probably existed problems in each part of the system base d on the achieved results , experimentai works has further developed 本文系统给出了以钛宝石晶体做为增益介质和放大介质的飞秒激光脉冲放大系统理论，针对各部分可能出现的问题提出了相应的解决方法，并在此基础上开展了部分实验工作。
Ultrashort pulse amplification , including chirped pulse amplification ( cpa ) and optical parametric chirped pulse amplification ( opcpa ) , has been becoming one of the hot researches in the field of ultrashort pulse laser technology because ultrashort and ultrahigh intensity pulse laser has important applications in high field physics , such as x - ray laser , icf , laboratory astrophysics , laser particle accelerator , and so on 由于超短超强脉冲激光在x射线激光、惯性约束核聚变、实验天体物理、激光粒子加速器等强场物理研究领域内的重要应用，超短脉冲激光放大技术目前已成为超短脉冲激光技术研究的热点之一。它包括啁啾脉冲放大( cpa )和光参量啁啾脉冲放大( opcpa )两大类。
Abstract : by using the pulse - sequence model ， the inverse problem of amplification of broad - spectral - bandwidth laser pulse has been studied ， i . e . ， to find the initial input temporal pulse profile ， spatial profile ， spectral distribution and fluence from the required output temporal ， spatial pulse profile ， spectral distribution and fluence as well as the given amplifier parameters 文摘:采用脉冲分割模型，研究了宽频带激光脉冲放大的逆问题，即由所要求的输出激光脉冲时间、空间波形、光谱分布和能量密度，并给定放大器参数情况下，求输入激光脉冲时间波形、空间、光谱分布。
The theoretical part mainly refers to studies of optical parametric chirped pulse amplification . we analyze some basic theories of opcpa , such as phase matching , parametric bandwidth , walk - off in space and time , gain property and so on , and compare the basic properties of bbo , lbo and kdp 理论部分主要是对新兴的光参量啁啾脉冲放大技术的相位匹配、参量范围、时空走离、增益及带宽特性等基础理论进行了分析，并对常用的bbo 、 lbo和kdp基础特性进行了比较分析，这对于光参量啁啾脉冲放大系统的设计具有一定的实际意义。
