基于双F-P标准具的宽调谐窄线宽Tm:YAP脉冲激光器
Widely Tunable Narrow Linewidth Tm:YAP Pulse Laser with Two F-P Etalons
方燕 1刘明明 2李若冰 1刘景良 1陈薪羽1
作者信息
- 1. 长春理工大学 物理学院,长春 130022
- 2. 湖北久之洋红外系统股份有限公司,武汉 430200
- 折叠
摘要
设计了一种宽调谐、窄线宽、高重频的Tm:YAP脉冲激光器.采用三个切轴方向的Tm:YAP晶体作为增益介质,通过0.5 mmYAG材质F-P标准具和0.025 mm熔石英材质F-P标准具,激光器分别实现了49 nm、44 nm、51 nm波长连续调谐,具体分别为1951～2000 nm、1932～1976 nm、1943～1994 nm.同时测得激光线宽均在0.4 nm左右.声光调Q 10 kHz脉冲重复频率下,分别实现了最大平均功率5.08 W、6.29 W、4.83 W的脉冲激光输出.对比发现,b轴Tm:YAP激光器的平均功率最大,测得最大平均功率下的脉宽为65.7 ns,光束质量因子M2在x方向上为1.84,y方向上为1.93.结果表明b轴Tm:YAP晶体具有宽调谐、窄线宽、高功率、大能量激光的潜力.
Abstract
A Tm:YAP pulsed laser with wide tuning,narrow linewidth,and high re-frequency was designed. Three tangential-axis oriented Tm:YAP crystals were used as the gain medium,and the lasers were continuously tuned at wave-lengths of 49 nm,44 nm,and 51 nm by means of 0.5 mm YAG F-P standards and 0.025 mm fused-silica F-P standards,which were specified as 1951～2000 nm,1932～1976 nm,and 1943～1944 nm,respectively. Meanwhile,the measured laser linewidths were all around 0.4 nm. The pulsed laser outputs with maximum average power of 5.08 W,6.29 W,and 4.83 W were achieved under the acousto-optic tuning Q 10 kHz pulse repetition frequency,respectively. Comparison reveals that the b-axis Tm:YAP laser has the largest average power,with a measured pulse width of 65.7 ns at the maximum average power,and a beam quality factor M2 of 1.84 in the x-direction and 1.93 in the y-direction. The results indicate that the b-axis Tm:YAP crystals have the potential for broadly-tuned,narrow linewidths,high power,and high-energy lasers.
关键词
脉冲激光/Tm:YAP晶体/可调谐激光器/窄线宽激光器Key words
pulsed laser/Tm:YAP crystal/tunable laser/narrow linewidth laser引用本文复制引用
基金项目
吉林省科技计划(YDZJ202101ZYTS031)
出版年
2024
NETL
NSTL
万方数据