U . s . a has plan to spend eleven hundred million dollars to build a great high - power laser setting of 192 routes of laser which is named nif the basic theory of laser - fusion is firstly brought forward by wang ganchang academician in 1964 美国计划花11亿美元建造一个名为国家点火装置( nif )的192路大型高功率激光装置。激光聚变的基本理论原理是由中国的王淦昌院士于1964年最先提出的，中国在这一领域的研究水平也是国际领先的。
Under this circumstance , we did some research in system reliability of sg - iii . the main contributions of this thesis are as follows : a brief introduction of the basic structure and principle of sg - iii is made , system reliability and shot reliability are defined 基于这一背景,本文针对神光iii激光装置的系统可靠性开展了部分研究工作,包括如下内容: ( 1 )根据神光iii装置的基本组成结构和原理,定义了系统可靠性和打靶可靠性。
5 . the excitation sources that can cause motion of the optical elements and its relations are studied and analyzed . based on stability of optical component , the stability allocation theory and methodology for accounting for excitations are presented 5 、分析和确立了影响光学元件稳定性的激励源及其相互关系，并基于光学元件稳定性指标要求，探讨了激励源稳定性指标分配所采用的理论和方法，为系统分析和研究大型固体激光装置光学元件稳定性提供了理论基础。
The use of the state - of - the - art laser facility makes it possible to create conditions of the same or similar to those in the astrophysical processes . the introduction of the astrophysics - relevant ideas in laser - plasma experiments is propitio us to the understanding of the astrophysical phenomena . however , the great difference between the laser - produced plasmas and the astrophysical processes makes it awkward to model the latter by laser - plasma experiments . this paper addresses the physical backgrounds for modeling the astrophysical plasmas by laser plasmas , connecting these two kinds of plasmas by scaling laws . thus , allowing the creation of experimental test beds where observations and models can be quantitatively compared with laser - plasma data . special attentions are paid on the possibilities of using home - made laser facilities to model astrophysical phenomena 采用当前最先进的激光装置与物质相互作用，可以获得与天体物理过程中相同或相似的条件，并进而开展利用激光等离子体模拟天体物理现象的实验.然而，激光等离子体为微米空间尺度、纳秒存活时间，而天体物理对象则为宇宙学的极大的时间与空间尺度，对在物理上和实际操作上将这两种表面上存在巨大差异的物理过程对应起来从而利用激光等离子体研究天体物理过程的可能性进行了讨论，特别是对利用国内的激光装置开展模拟实验的可行性进行了讨论
Since ti : sappire owns many great properties , chirped pulse amplification based on ti : sappire makes rapid technical progress and many developed countries have built up 100tw - grade ti : sappire ultrashort and ultrahigh pulse laser system . optical parametric chirped pulse amplification gets great academic interests because of its many merits 由于钛宝石晶体的优良性能，以钛宝石为增益介质的啁啾脉冲激光放大技术飞速发展，世界各科技大国相继建成了百太瓦级的钛宝石超短超强脉冲激光装置。
When the laser facilities are in operation , the position and direction of all the beams are subject to change due to the optical structural drifts excited by multiple input sources . these changes will influence the precision of the beam propagation and finally the focal spot positions on targets which are strictly dictated by the requirements of plasma physics experiments 这些激光装置在运行过程中，光学元件结构在外界激励因素作用下容易产生漂移，使光束位置和方向发生改变，影响光束打靶定位精度，无法满足精密物理实验要求。
Taking stray light in " shenguang iii " as the study subject and basing on the basic principle of geometrical optics , applying the technological path of paraxial ray and real ray tracing , a new analytic way and data structure , which suits for the specific requirement in analysis and process of ghost images , is presented 本课题就是以“神光- ”激光装置中的杂散光为研究对象，针对高功率多程放大系统在鬼像分析与处理方面特殊要求，从光线光学的基本原理出发，应用近轴光线与空间光线追迹技术路线，提出一种新型的分析方法和数据结构。
The measuring of multi - pass amplifying facility ' s wave - front aberration was achieved , and the character of wave - front aberration in such high power solid - state laser facility was mastered primarily , then the requirement for wave correct system was found out more clearly which would provide support for high power solid - state facility ' s optimum design . 4 完成了多程放大系统中波前误差的实验测量，初步掌握了类似构型高功率固体激光系统的波前误差分布特性，从而进一步明确了对波前校正系统校正能力的要求，为新一代高功率固体激光装置波前校正系统的优化设计提供了依据； 4
Laser facilities have been built with the output energy of about a hundred joules at the beginning up to a few mega - joules now and beamline numbers have increased to hundreds . for such facilities , each beamline contains numerous optical elements with enlarged apertures of up to a few tens centimeters and the optical paths extend as long as hundreds of meters 激光装置的输出能量从初期的百焦耳级发展到兆焦耳级，其结构规模从小型单路输出发展到上百路输出，光学元件数量大幅度增加，光学元件口径增大到数十厘米，光传输距离也从数十米增加到百米。
Abstract : group technology is introduced in the developing proc ess of high - power laser system for the first time . as an example , on the basis of the spatial filter , it is demonstrated the needs and feasibility of group design in the developing process of high - power laser system , and the composing of comp uter aided group design ( gt - cad ) system is discussed and how to put it into pra ctice in the high - power laser system 文摘:在高功率激光装置研制中首次引入成组技术概念，并以空间滤波器为例论证了在高功率激光装置的器件研制过程中实施成组设计的必要性和可行性.最后讨论了计算机辅助成组设计系统( gt - cad )的组成和在高功率激光装置中具体实施过程
