摘要
介绍了利用激光二极管双端泵浦高功率1.89μm Tm:YLF激光器,其线宽小于0.1 nm。腔内以Brewster角插入0.05 mm YAG F-P标准具强制起偏,获得1.89μm的水平偏振光,再依次加入0.05 mm和0.3 mm YAG F-P标准具稳定输出波长,实现窄线宽激光输出。当注入泵浦功率为137 W时,获得了输出波长为1 889.3 nm 46 W的连续输出功率,其斜率效率为45.1%。随着泵浦功率由20 W增加到137 W,输出波长仅漂移了0.12 nm。当激光输出功率为15 W和30 W时,对应的光束质量分别为1.7和2.2。
A high power diode-pumped Tm:YLF laser operating at1.89μm with FWHM line width less than0.1nm is introduced.The YAG Fabry-Perot etalons of0.05mm is inserted to polarize at Brewster angle in laser cavity,and1.89μm horizontal polarized light is obtained.Two Fabry-Perot etalons with0.05mm and0.3mm YAG are inserted successively for spectral narrowing and laser stabilization.Under incident pump power of137W,46W continuous output power with1889.3nm output wavelength and45.1%slope efficiency is achieved.The laser wavelength shift of only0.12nm with the incident pump power from20W to137W is observed.The beam quality factors at output power of15W and30W are1.7and2.2respectively.
作者
丁宇
闫秀生
DING Yu;YAN Xiu-sheng(Science and Technology on Electro-Optical Information Security Control Laboratory, Tianjin 300308, China)
出处
《光电技术应用》
2018年第5期24-26,36,共4页
Electro-Optic Technology Application