利用BF实现钛宝石激光器宽带可调谐激光输出  

Broadband tunable output of Ti:sapphire lasers by using BF

作　　者：陈辉[1] 夏元钦[1] 鲁振中[1] 樊荣伟[1] 赵卫疆[1] 陈德应[1] 

机构地区：[1]哈尔滨工业大学可调谐激光技术国家级重点实验室,黑龙江哈尔滨150080

出　　处：《红外与激光工程》2008年第3期461-463,共3页Infrared and Laser Engineering

基　　金：新世纪优秀人才支持计划;哈尔滨工业大学优秀团队支持计划;可调谐激光技术国家级重点实验室和哈尔滨工业大学校基金资助项目(HIT200305)

摘　　要：设计了一组双折射滤光片,由3片石英晶体组成,光轴倾角均为0°,基片厚度为0.45mm,3片厚度比为1:4:10。用于自行搭建的钛宝石激光器调谐实验,发现双折射滤光片绕其法线旋转约20°,输出激光中心波长可由760nm连续变化到845nm,并且线宽均小于2nm,最窄能达到0.73nm。泵浦能量465mJ时,800nm输出能量为85mJ。最大斜率效率为32.1%,最大光-光转换效率约为18.3%。双折射滤光片具有较好的调谐和压线宽作用。A birefringent filter（BF） was designed, which consisted of three quartz plates. The thickness of substrate was 0.45 mm and its optical axis obliquity was 0°, meanwhile , the thickness rate of the three plates was 1：4：10. The BF revolved its normal for about 20°, and the center wavelength of the output light could be continuously tuned from 760 to 845 nm by this BF in the process of turning the Ti：sapphire lasers. The bandwidth was narrower than 2 nm with the narrowest bandwidth of 0.73 nm. Besides, when the pump energy was 465 mJ, the output energy of 800 nm was 85 mJ. The highest slope efficiency was 32.1%, and the highest light to light conversion efficiency was 18.3%. Thus, this BF has a good function of tuning and narrowing bandwidth.

关 键 词：双折射滤光片 钛宝石激光器 可调谐激光 

分 类 号：TN248.1[电子电信—物理电子学]