双掺Nd：Ce：YAG晶体激光输出特性  

Output characteristics of double-doped Nd:Ce:YAG laser

作　　者：赵振宇[1] 聂劲松[1] 秦树军 

机构地区：[1]解放军电子工程学院光电系,脉冲功率激光技术国家重点实验室,合肥230037 [2]科苑集团博士后流动站,合肥230088

出　　处：《强激光与粒子束》2011年第4期911-914,共4页High Power Laser and Particle Beams

基　　金：脉冲功率激光技术国家重点实验室基金项目

摘　　要：为提高固体激光器的能量利用率,增大输出能量,将双掺Nd:Ce:YAG晶体的输出特性与普通Nd:YAG晶体进行了对比研究。分析了Nd3+和Ce3+的吸收光谱对激光晶体初始阈值反转粒子数的影响,结果显示:双掺Nd:Ce:YAG晶体可以提高晶体对泵浦光能量的利用率及激光器的输出能量,且可降低阈值泵浦能量。并分别检测了Nd:Ce:YAG激光晶体与Nd:YAG晶体的输出激光能量和阈值泵浦能量,实验结果表明:在输入电压为750 V时,Nd:Ce:YAG晶体与Nd:YAG晶体的输出能量分别为651.5 mJ和390.4 mJ,能量利用率分别为2.31%和1.38%,激光振荡需要的泵浦能量阈值分别为10.56 mJ和15.21 mJ,且普通Nd:YAG晶体的斜效率为0.36%,而双掺Nd:Ce:YAG晶体的为0.49%。In order to increase the energy efficiency and output energy of solid lasers,the output characteristics of Nd：Ce：YAG crystal was studied,compared with simple Nd：YAG crystal.The impact on initial inverted population caused by the absorption spectrum of Nd3＋ and Ce3＋ was analyzed.It is found that the energy efficiency of laser crystal can be increased by doping both Nd3＋ and Ce3＋ in YAG crystal,which increases the output energy and lowers the threshold pump energy of lasers.With the same input voltage of 750 V,the output energy of the Nd：Ce：YAG laser and Nd： YAG laser is 651.5 mJ and 390.4 mJ,respectively,the energy efficiency is 2.31% and 1.38%,and the threshold pump energy is 10.56 mJ and 15.21 mJ.The laser slope efficiency for Nd：Ce：YAG crystal is 0.49%,compared with Nd：YAG crystal 0.36%.

关 键 词：双掺Nd:Ce:YAG激光晶体 输出能量 能量利用率 阈值泵浦能量 斜效率 

分 类 号：O734[理学—晶体学]