脉冲红光泵浦Cr∶LiSAF激光器输出特性研究  

Experimental study on output beam of Cr∶LiSAF pumped by pulse red laser

作　　者：郑婉君[1,2] 阮双琛[1] 杜晨林[1] 张力[1] 王云才[2] 

机构地区：[1]深圳市激光工程重点实验室深圳大学电子科学与技术学院,深圳518060 [2]太原理工大学物理系,太原030024

出　　处：《深圳大学学报（理工版）》2011年第1期23-28,共6页Journal of Shenzhen University(Science and Engineering)

基　　金：广东省自然科学基金资助项目(011736)~~

摘　　要：采用671nm红光泵浦Cr∶LiSAF激光晶体,实现中心波长为849nm,调谐范围为820～890nm,脉冲宽度为100ns,重复频率为11kHz的激光输出.该系统阈值功率为24mW,激光输出最大平均功率可达60mW,此时泵浦功率为521mW.使用电荷耦合器(charge coupled devices,CCD)探测器及图像采集系统,观察并记录了输出光光斑.通过调节晶体及输出镜使光斑的形状和个数发生变化,针对输出光斑为1～3个点的情况进行详细研究,分析不同情况下的输出特性.实验结果表明,激光输出功率和光斑之间的最大距离会随泵浦功率的增加而递增.With the Cr∶LiSAF pumped by using 671 nm red light,achieved the output beam of wavelength 850 nm,tunable from 820 nm to 890 nm,repetition rate of 11 KHz and pulse width of 100 ns.The power of the output beam reached 60 mW under the 521 mW pump power.The CCD camera was used to observe and record the variation of output beam spots with readjusting the output coupler＇s angle.Under different conditions,the characteristic of output laser will be different.In this work,1~3 laser spots were observed and discussed in detail.It is demonstrated in the experiment that both the output power and the maximum distance between these spots increased with the augment of pump power.

关 键 词：激光光学 掺铬六氟铝锶锂晶体 可调谐激光器 电荷耦合摄像机 红光激光器 全固化可调谐激光光源 

分 类 号：TN244[电子电信—物理电子学]