新型非平面多程激光放大器的理论研究  

Theoretical Study on a New Non-Planar Multi-Pass Laser Amplifier

作　　者：杨清[1] 霍玉晶[1] 何淑芳[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《中国激光》2012年第12期32-37,共6页Chinese Journal of Lasers

摘　　要：提出了一种基于双镜环行光路的新型非平面多程激光放大器,它具有结构简单、体积小、空间对称性好、调节容易、光通放大次数多的优点。信号光束在放大器腔内沿着立体环行的非平面空间对称路径多次通过激光介质被放大,可在小型激光介质中获得高功率的放大激光输出。对放大器腔内光路进行了理论建模和参量分析,给出了部分光路模式的模拟图,分析了光路损耗与功率放大;初步设计了基于Yb:YAG薄片和激光二极管(LD)端面抽运的全固态非平面多程薄片激光放大器,适用于高功率激光放大。A new non-planar multi-pass laser amplifier based on the two-mirror ring optical path is proposed. It has the advantages of simple structure, small size, good space symmetry, easily adjustable and more amplification times. In the cavity of the amplifier, the signal beam goes through the laser medium many times for amplification along the three-dimensional non-planar symmetric path, and the high-power amplified laser can be obtained in a small-size laser medium. Theoretical modeling and parametric analysis of the optical path in the cavity of the amplifier are done. Simulation graphs for a portion of modes of optical path are given, optical loss and power amplification are also analyzed. A basic design of a solid-state non-planar multi-pass thin-disk laser amplifier based on Yb： YAG thin disk and laser diode （LD） end-pumping is given for high-power laser amplification.

关 键 词：激光光学 多程激光放大器 非平面 光路模式 高功率 

分 类 号：TN242[电子电信—物理电子学]