Highly efficient Nd:YAG/LBO laser at 473 nm under direct 885-nm diode laser pumping  

作　　者：吕彦飞 夏菁 王君光 张安锋 张喜和 包琳 全慧 尹晓东 

机构地区：[1]School of Science,Changchun University of Science and Technology [2]Xi'an Institute of Applied Optics [3]Jilin Junkun Optoelectronics Co.Ltd.

出　　处：《Chinese Optics Letters》2010年第2期187-189,共3页中国光学快报（英文版）

基　　金：supported by the Foundation Research Program for National Defense Commission of Science, Technology,and Industry for National Defense of China under Grant No.A3620060122.

摘　　要：In diode pumped Nd：YAG lasers, the quantum defect is the most important parameter determining the thermal load of the laser crystal, which can be dramatically reduced by pumping directly into the upper laser level. A compact folded three-mirror cavity with a length of 105 mm is optimized to obtain a highly efficient 473-nm laser. When the absorbed pump power （with 15.8-W incident pump power） at 885 nm into Nd：YAG is 10 W, a continuous-wave 473-nm blue laser as high as 2.34 W is achieved by LBO intra-cavity frequency doubled. The optical-to-optical conversion efficiency is 14.8%. To the best of our knowledge, this is the highest efficiency at 473 nm bv an intra-cavitv doubled freauencv Nd：YAG laser.In diode pumped Nd：YAG lasers, the quantum defect is the most important parameter determining the thermal load of the laser crystal, which can be dramatically reduced by pumping directly into the upper laser level. A compact folded three-mirror cavity with a length of 105 mm is optimized to obtain a highly efficient 473-nm laser. When the absorbed pump power （with 15.8-W incident pump power） at 885 nm into Nd：YAG is 10 W, a continuous-wave 473-nm blue laser as high as 2.34 W is achieved by LBO intra-cavity frequency doubled. The optical-to-optical conversion efficiency is 14.8%. To the best of our knowledge, this is the highest efficiency at 473 nm bv an intra-cavitv doubled freauencv Nd：YAG laser.

关 键 词：Conversion efficiency Laser pulses Mirrors NEODYMIUM Pumping (laser) Pumps THERMOANALYSIS 

分 类 号：TN248[电子电信—物理电子学]