激光与光电子学进展, 2019, 56 (1): 011404, 网络出版: 2019-08-01
Nd∶YAG平面波导1319 nm激光放大研究 下载: 1306次
Amplification Properties of 1319 nm Nd∶YAG Planar Waveguide
摘要
报道了一种波长为1319 nm的准连续Nd∶YAG平面波导激光放大器。种子源为基于侧面抽运棒状Nd∶YAG激光头的振荡器,放大器的激光增益介质为平面波导结构Nd∶YAG。YAG平面波导的尺寸大小为0.6 mm×10 mm×60 mm,中心区域0.1 mm×10 mm×50 mm为掺杂区,周围均为非掺杂YAG。放大器的抽运源为半导体激光器阵列,抽运光经过耦合后从后端面进入平面波导材料,种子光从前端进入单通放大输出。Nd∶YAG平面波导与两个微通道热沉焊接起来实现良好的散热,端面镀1319、1064和808 nm高透膜层。当抽运电流为110 A、重复频率为200 Hz时,获得了功率为36 mJ的1319 nm激光输出,放大光光效率为8.3%。
Abstract
A quasi continuous wave Nd∶YAG planar waveguide laser amplifier with a wavelength of 1319 nm is reported. The seed source is an oscillator based on a side-pumped rod Nd:YAG laser model, and the gain medium of the amplifier is a planar waveguide Nd∶YAG. The size of the YAG planar waveguide is 0.6 mm×10 mm×60 mm, the central area 0.1 mm×10 mm×50 mm is the doped region, and the surrounding area is undoped YAG. The pump source of the amplifier is a diode laser array, which is coupled from the rear end into the planar waveguide gain medium. The seed laser is coupled into the gain medium via the end facet, and a single-pass amplification is introduced. In order to achieve the good heat dissipation, two micro channel heat sinks are welded onto the Nd∶YAG planar waveguide. The end facets are coated high transmission at 1319, 1064 and 808 nm. When the driving current of the diode laser arrays is 110 A and the pulse repetition rate is 200 Hz, the output of 36 mJ 1319 nm laser is obtained, and the optical to optical efficiency is 8.3%.
林伟平, 张雷, 王君涛, 陈月健, 徐浏, 汪丹, 周唐建, 童立新, 鲁燕华, 高清松. Nd∶YAG平面波导1319 nm激光放大研究[J]. 激光与光电子学进展, 2019, 56(1): 011404. Weiping Lin, Lei Zhang, Juntao Wang, Yuejian Chen, Liu Xu, Dan Wang, Tangjian Zhou, Lixin Tong, Yanhua Lu, Qingsong Gao. Amplification Properties of 1319 nm Nd∶YAG Planar Waveguide[J]. Laser & Optoelectronics Progress, 2019, 56(1): 011404.