光学学报, 2017, 37 (12): 1214003, 网络出版: 2018-09-06
高增益Nd∶YAG板条中的放大自发辐射抑制技术 下载: 1018次
Technology of Amplified Spontaneous Emission Suppression in High Gain Nd∶YAG Slab
激光光学 放大自发辐射 小信号增益系数 全内反射 多层复合膜 laser optics amplified spontaneous emission small signal gain coefficient total internal reflection multi-layer film
摘要
分析了Nd∶YAG板条中产生强烈放大自发辐射(ASE)的原因,开展了抑制高增益激光板条中ASE的理论和实验研究。抽运光占空比为8%,峰值抽运功率为21.38 kW,波长为1064 nm连续探测光的注入光强为4 W/cm
2,在Nd∶YAG板条上、下表面镀制普通倏逝膜和多层复合膜时探测光功率的放大倍率分别为1.82和1.92,Nd∶YAG板条总储能增大了4.6%。实验结果表明:通过对Nd∶YAG板条上、下表面镀制多层复合膜,可在一定程度上抑制板条内的ASE效应,增大激光板条的总储能。
Abstract
The causation of the generation of strong amplified spontaneous emission (ASE) in the Nd∶YAG slab is analyzed, and the academic and experimental researches on suppressing ASE in high gain laser slab are developed. The pumping duty ratio is 8%, the peak pumping power is 21.38 kW and the injecting intensity of 1064 nm continuous detecting laser is 4 W/cm
2. The output power amplifying ratios of the detecting laser are 1.82 and 1.92 respectively with common evanescent coating and multilayer coating. The total stored energy in the slab increases by 4.6%. The experimental results show that ASE effect can be suppressed and the total stored energy in the laser slab can increase to a certain extent when special multilayer coating is coated on the top and bottom surfaces of the slab.
李密, 焦宏飞, 邬映臣, 胡浩, 雷军, 吕文强, 周唐建, 李建民, 徐浏, 唐淳, 赵娜. 高增益Nd∶YAG板条中的放大自发辐射抑制技术[J]. 光学学报, 2017, 37(12): 1214003. Mi Li, Hongfei Jiao, Yingchen Wu, Hao Hu, Jun Lei, Wenqiang Lü, Tangjian Zhou, Jianmin Li, Liu Xu, Chun Tang, Na Zhao. Technology of Amplified Spontaneous Emission Suppression in High Gain Nd∶YAG Slab[J]. Acta Optica Sinica, 2017, 37(12): 1214003.