Cr^(4+):YAG被动调Q激光器中受激粒子上转换效应对脉冲的影响研究  

Influence of energy-transfer upconversion effect on the pulse in diode-pumped Cr:YAG passively Q-switched lasers

作　　者：杨林[1] 黄维玲[2] 丘军林[2] 冯宝华[3] 张治国[3] Volker Gaebler Baining Liu Hans J.Eichler 

机构地区：[1]华中科技大学激光技术国家重点实验室,武汉 430074,中国科学院物理研究所物理光学实验室,北京 100080 [2]华中科技大学激光技术国家重点实验室,武汉 430074 [3]中国科学院物理研究所物理光学实验室,北京 100080 [4]Optical Institute,Technical University Berlin,D-10623 Berlin,Germany

出　　处：《物理学报》2003年第10期2471-2475,共5页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :6 0 2 780 2 4 )资助的课题~~

摘　　要：分析和报道了受激粒子能量上转换 (ETU)效应对Cr:YAG被动调QNd :YAG Nd :YVO4激光器的输出脉冲影响研究 .结合ETU理论分析和被动调Q速率方程组 ,得到了初始反转粒子密度 ,末态反转粒子密度和光强最大时反转粒子密度的比值变化对激光输出脉冲宽度和脉冲能量的影响 ,和实验结果相一致 .同时讨论了降低ETU效应的方法 。Influence of energy-transfer upconversion (ETU) effect on the output pulse in diode-pumped Cr: YAG passively Q-switched lasers is investigated. Using the ETU theory and Q-switching rate equations, the initial population inversion, the final population inversion and the threshold population inversion at the maximum photon density are achieved. The output pulse width and pulse energy depend on the relation between them. The predicted results are in good agreement with the experimental results. The method of reducing the ETU effect is also discussed and it is useful to optimize this kind of lasers.

关 键 词：被动调Q激光器 受激粒子能量上转换效应 CR^4+:YAG激光器 优化设计 输出脉冲 固体激光器 饱和吸收体 

分 类 号：TN248.1[电子电信—物理电子学]