文献类型：会议论文

英文题名：Research on key technologies for 2μm band of thulium-doped fiber laser

作者：Zhang, Ning[1]; Sun, Huijuan[2]; Luo, Yang[3]

第一作者：张宁

通讯作者：Zhang, Ning

机构：[1] Smart City College, Beijing Union University, Beijing, China; [2] Institute of Fundamental and Interdisciplinary Sciences, Beijing Union University, Beijing, China; [3] Institute of Light Wave Technology, Beijing Jiaotong University, Beijing, China

第一机构：北京联合大学智慧城市学院

会议论文集：International Conference on Electronics, Communications and Information Technology, CECIT 2020

会议日期：December 26, 2020 - December 28, 2020

会议地点：Shenzhen, Virtual, China

语种：英文

外文关键词：Fiber lasers - Fibers - High power lasers - Light - Pumping (laser) - Rare earths - Thulium

摘要：Abstract The gain material of 2μm wavelength thulium-doped fiber laser is a thulium-doped fiber doped with rare earth element thulium. Rare earth doped optical fiber as gain medium is the basic structure of optical fiber laser. This type of laser is mainly composed of pump source, coupler, gain optical fiber doped with rare earth elements, cavity and other optical devices. The pump source is generally a combination of one or several high-power laser diodes. The light emitted by the pump source enters the gain optical fiber doped with rare earth elements through a certain pumping mode. The inversion of the number of particles occurs when the doped optical fibers absorb photons, and then the light waves stimulated from the doped optical fibers are emitted by the laser after the oscillation. Since the connection structure and parameters between optical fibers and optical components can be maintained stable over a long period of time, thulium-doped lasers do not need to be maintained regularly and are based on output power. They have smaller volume and weight, lighter weight and longer life than solid-state lasers. However, in general, the power of a 2μm wavelength thumbium-doped fiber laser is not too high, while a high-power 2μm wavelength thumbium-doped fiber laser can meet people's needs and play a greater role. Therefore, improving the power of 2μm wavelength thumbium-doped fiber laser is an important direction for the development of thumbium-doped fiber laser. The energy level structure of thulium ion is analyzed, the doping concentration of thulium ion is studied, and the method to increase the power of a 2μm wavelength thulium-doped fiber laser is given. ? Published under licence by IOP Publishing Ltd.