In the section of experiment , we focused on the research of optical system of optical parameter oscillation , computer controlling data sampling closed - circuit system and technology of computer controlling feed - back . in the section of optics , we used present condition to do the experiments about optical parameter effect and got a series of characteristic curve on power transition efficiency and output power 本文的实验部分主要侧重于智能化光参量系统的光学部分、计算机控制数据采集闭环系统以及计算机控制反馈技术的研究。在光学部分，本论文利用现有实验条件进行了参量振荡器频率调谐的研究，得到了调谐曲线，并做了输出参量光的能量转换效率以及输出功率的实验，得到一系列特性曲线。
In the sectionl , we introduced the development of opo and the correlative nonlinear optical ( nlo ) crystal , summarized the background and the recent advance of the clbo and linewidth of opo ; in the section2 , we have studied and stimulated linewidth of parametric light of clbo optical parametric oscillators pumped by 355nm by computer 第一章介绍了光参量激光器及相关非线性晶体的发展状况，综述了clbo晶体和opo线宽的研究背景及其研究进展情况；第二章以355nm作为泵浦光，对影响clbo晶体光参量振荡器线宽的各种物理机制进行了数值模拟计算、分析。
We studied the optical characteristic of the optical parametric oscillator ( opo ) on a new crystal cesium lithium borate ( cslib6oio ) . because all - solid - state uv laser has the advantage of little bulk , high power and easily to be carried etc . the application and exploitation of it has important value of not only in theory but also practicality 论文从理论上研究了新型非线性cslib _ 6o _ ( 10 ) ( clbo )晶体用于光参量过程的有关特性。由于全固态激光器具有体积小、功率高、携带方便等特点，其应用和开发，不但有重要的学术价值，而且有很大的实用价值。
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。
In the section of theory , we mainly studied optical parameter effect , discussed physical mechanism of optical parameter laser and normalized coupled wave equation and got the solution . we also carried out the analysis of gain mode of optical parameter oscillation , studied the threshold condition , analyzed output characteristics and then achieved characteristic curve 本文理论部分主要作了有关光参量效应方面的研究，探讨了光参量振荡器的物理机制、参量振荡的归一化耦合波方程，求解得到了参量振荡器的耦合波函数，同时对光参量振荡的增益模式进行了分析，研究了使参量振荡的阈值条件，并对光参量振荡器的输出特性进行了分析，得到了特性曲线。
It is transparent in a region from the visible to the infrared range ( 0 . 45 - 13 ? m ) and has a fitful birefringence and a large nonlinear coefficient . aggas2 crystal can be made to be octonary device , difference - frequence device and parametric oscillator , and laser sources of different frequences in 1 . 8 - 11 ? m band can be provided 其红外透波范围宽( 0 . 45 - 13 m ) ，具有适宜的双折射率和大的非线性系数，可制成倍频、差频和光参量振荡器件，在1 . 8 - 11 m范围内可提供多种频率的激光光源。
From three - wave coupling equations , the optimal crystal length , conversion efficiency and parametric light pulse width are computed numerically when clbo is used in picosecond optical parametric amplification . the results present that clbo are suited for optical parametric amplification in short wave band . in order to get higher conversion efficiency , the crystal length should be optimized according to the intensities of pump and signal waves 从三波耦合方程出发，对clbo用于皮秒级光参量放大时，最佳晶体长度、转换效率和参量光的脉冲宽度进行了理论分析和数值模拟，结果表明clbo晶体适合在短波范围作光参量放大，为达到高的转换效率和窄脉宽的信号光输出，泵浦光和初始入射信号光的强度应根据晶体长度取最优化值。
2 . second harmonic generation in superlattice is derived from the coupled equation of three waves i discusing the relationship between the period of ppln and pumping wavelength . 3 . on the theory of optical parametric oscillators , ppln - opo are analyed . theoretical analysises on temperature tuning and period tuning are presented 以光参量振荡理论为基础，分析了ppln opo在不同泵浦波段的调谐特性，重点讨论了加ln opo的温度调谐和周期调谐特性以及ppln opo的温度带宽周期带宽，从理论上研究了ppln opo信号光的转化效率和输出特性。
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。
