摘要
为了简化激光器结构,减少腔内损耗,首次提出利用LiNbO3电光晶体较高的色散特性,实现2μm波段可调谐激光器的调Q与调谐。将LiNbO3晶体加工成单块特殊形状的棱镜,作为主动调Q器件,用于2μm波段灯泵Cr!Tm:YAG激光器,以产生巨脉冲,该棱镜还同时具有调谐的功能。将该棱镜插入室温灯泵的Cr!Tm:YAG激光器中,实现了1.95～2.08μm范围的调Q、调谐运转,重复频率为1～5 Hz。实验结果表明,所提出的方法可行。
To minimize the elements inserted in the cavity of 2μm band tunable laser and reduce the cavity loss, a special designed prism based on the disperse property of LiNbO3 crystal was used as tuning and Q-switching element . Two faces cut at Brewster＇s angle make the prism work well as tuning element. In a flash-lamp pumped Cr-Tm：YAG 2μm laser with the LiNbO3 prism, active Q-switching operation was realized at room temperature, while the tuning range of 1.95 -2.08μm was obtained with the prism. The repetition rate of the Q-switched laser was 1-5 Hz. The experimental result shows that the Q-switching and tuning method is valid.
出处
《红外与激光工程》
EI
CSCD
北大核心
2005年第6期669-672,共4页
Infrared and Laser Engineering
基金
安徽省自然科学基金资助项目
