变反射率镜非稳腔Φ20mm口径Nd：glass激光器研究  

Aφ20mm Nd:glass Laser Using an Unstable Resonator with Gaussian Mirror

作　　者：常兵[1] 蔡希洁 李庆国[1] 

机构地区：[1]中国科学院上海光机所

出　　处：《中国激光》1995年第5期321-328,共8页Chinese Journal of Lasers

摘　　要：详细分析了高斯变反射率镜非稳腔的腔模和输出特性，给出了各阶横模的解析表达式。采用高质量的高斯变反射率镜在Φ２０ｍｍ大口径Ｎｄ：ｇａｌｓｓ激光介质上实验研究了这种腔的输出特性，获得了１０Ｊ级发散全角为０．１８ｍｒａｄ近衍射极限的高强激光束，该发散角只有相应普通非稳腔的１８％，同样泵浦时输出能量约为普通非稳腔的７０％。最后实验研究了这种腔结构的失谐灵敏性．The analytic results of TEM modes in an unstable resonator with Gaussian variable reflectivity mirror are given. The output characteristics of a Φ 20 mm Nd: glass laser using a resonator of this kind are studied experimentally. The output beam has a near diffraction-limited divergence of 0.18 mrad and about 10 J energy. Its misalignment stability is studied,too.

关 键 词：Nd:glass激光器 激光器 变反射率镜 非稳腔 

分 类 号：TN248.12[电子电信—物理电子学]