LD泵浦的Nd∶GdVO_4/KTP腔内倍频激光器(英文)

LD Pumped Nd∶GdVO_4/KTP Intracavity-frequency-doubling Laser

基于对Nd∶GdVO4 晶体热焦距的测量及其 1.0 6 μm激光基本性能 ,用三镜折叠腔研究了半导体激光器 (LD)泵浦的Nd∶GdVO4 /KTP晶体的内腔倍频性质 当用从直径为 2 0 0 μm的单光纤输出的低功率的半导体激光泵浦时 ,绿光的阈值是 2 6mW ,光光转换效率为 17.3% 当用从直径为 1.5 5mm的光纤束输出的高功率的半导体激光泵浦时 ,绿光的阈值是 2 0 0mW ,光光转换效率为 19.35 %

Based on the measuring of thermal focal length and 1.06 μm fundamental property of Nd∶GdVO 4, the intracavity-frequency-doubling property of LD pumped Nd∶GdVO 4/KTP laser has been studied with a three-mirror folded cavity. When pumped by low power LD laser outputted from a single-fiber with the diameter of 200μm, the green laser has a threshold of 26 mW and an optical-to-optical efficiency of 17.3%. When pumped by high power LD laser outputted from a multi-fiber with the diameter of 1.55 mm, the green laser has a threshold of 200 mW and an optical-to-optical efficiency of 19.35%.