摘要
以激光二极管端面泵浦Nd∶YAG激光器为研究对象,通过实验研究了离轴泵浦条件下,离轴量的大小对激光器性能的影响。实验结果表明,当泵浦光离轴量增大时,斜效率增大,但输出光依次出现从低阶模到高阶模的变化,激光器的振荡阈值升高,光束质量变差;在同一泵浦位置增大LD电流时,输出光从高阶模向低阶模转化,光斑中心向此时的泵浦中心轴靠拢。
LD end-pumped Nd：YAG laser is researched. The experiment is guided to test of the influence of off-axis distance upon of the laser＇s performance while pump light is off-axis. After analyzing the results, when the off-axis amount is increased, the slope efficiency is enlarged, however, the changing of output light from low rank modes to high ones appears in turn,the threshold of laser is raised and the beam quality is inferior. What＇s more, while the LD＇s pump current is enlarged, on the same off-axis pumping location, the changing of output light from high rank mode to low one appears in turn and the center of the spot closes to the axis of the very pump location.
出处
《激光与红外》
CAS
CSCD
北大核心
2007年第10期1050-1053,共4页
Laser & Infrared
