学术
热键合技术的Cr^4＋：YAG被动调Q激光器理论和实验研究
丁征[1] 齐文宗[1] 衣学斌[2] 樊红英[2] 梁田[1]
[1]四川大学电子信息学院,成都610064 [2]西南技术物理研究所,成都610041
摘 要:
采用数值求解被动调Q速率方程，并讨论了基于热键合技术被动调Q激光器的优化方法。通过数值仿真讨论分析了谐振腔的损耗、饱和吸收体的初始透过率、输出镜的反射率和泵浦功率等参数对激光输出的影响。结果表明：输出镜存在最佳透过率，使得输出功率最高和脉冲能量最大；减小饱和吸收体的初始透过率能有效提高脉冲能量，并压缩脉宽，但是会增加阈值泵浦功率；泵浦功率与脉冲重复率和输出功率近似成线性增加，增大泵浦功率可以压缩脉宽。并通过实验验证了理论分析的正确性。[著者文摘]
文章出处:
《强激光与粒子束》-2007年19卷9期 -1454-1458页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1001-4322（2007）09-1454-05
Theoretic study and experiments on thermally bonded Cr^4＋： YAG passively Q-switched lasers
DING Zheng, QI Wen-zong, YI Xue-bin, FAN Hong-ying, LIANG Tian （1. College of Electronics and Information Engineering, Sichuan University, Chengdu 610064,China; 2. Southwest Institute of Technical Physics, Chen g du 610041, China）
Abstract:
Rate equations of passively Q-switched lasers were numerically calculated. The optimization of thermally bonded passively Q-switched lasers was discussed. The effect of key parameters of passively Q-switched lasers such as the initial transmission of the saturable absorber, the reflection of the output mirror, the pump power was got by numerical simulation. Output mirror transmission can be optimized to get the maximized output power and pulse energy. Decreasing initial transmission of the saturable absorber can cause pulse energy increase, pulse duration decrease and the threshold pump power increase respectively. The repeat rate and output power increase with pump power approximately linearly, and can shorten the pulse duration while increase the pump power. Theoretic calculation results have been demonstrated by experiments.[著者文摘]
Key words:
Thermally bonding; LD-pumped; Rate equation; Passively Q-switch; Saturable absorber
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