中国激光, 2020, 47 (4): 0401004, 网络出版: 2020-04-08
γ射线作用下光纤激光器的功率特性及热效应分析 下载: 1094次
Power Characteristics and Thermal Effects of the Gamma-Ray Radiated Fiber Lasers
激光器 光纤激光器 辐射效应 辐致损耗 功率退化 热效应 lasers fiber lasers radiation effect radiation-induced loss degradation of output power thermal effect
摘要
在辐射环境中工作的光纤激光器受到的辐射损伤会导致激光器功率退化,进而引起辐射致产热,从而影响到激光器的正常应用和系统安全。基于此,建立一种辐射环境表征参量与光纤激光器增益光纤内功率、热效应和温度分布的关系模型,开展稳态γ射线作用下掺镱双包层光纤激光器的功率特性及热效应的数值模拟仿真。研究了辐致损耗、辐射剂量、光纤长度以及泵浦方式对输出功率的影响,并对不同泵浦方式下增益光纤内的热效应进行了分析。相关结果能够为光纤激光器的辐射效应研究工作及在辐射环境下的工程应用设计提供参考。
Abstract
The fiber lasers operating in a radiation environment will suffer from radiation damage, which will reduce the output power and generate radiation-induced heat. This will affect the normal application of the lasers and the safety of the system. In this study, we intend to establish the relation between the radiation environment characterization parameters and the power, thermal effect, and temperature distribution with respect to the gain fiber of the fiber lasers. Subsequently, we conduct a numerical simulation with respect to the power characteristics and thermal effects of the γ-ray radiated double-clad fiber lasers. Additionally, we study the effects of the radiation-induced loss, radiation dose, fiber length, and pumping style on the output power of the lasers. Furthermore, we analyze the thermal effects of the fiber lasers under different pumping styles. The results of this study could provide a reference to study the radiation effects of the fiber lasers.
谌鸿伟, 陶蒙蒙, 赵海川, 赵柳, 栾昆鹏, 沈炎龙, 黄珂, 冯国斌. γ射线作用下光纤激光器的功率特性及热效应分析[J]. 中国激光, 2020, 47(4): 0401004. Chen Hongwei, Tao Mengmeng, Zhao Haichuan, Zhao Liu, Luan Kunpeng, Shen Yanlong, Huang Ke, Feng Guobin. Power Characteristics and Thermal Effects of the Gamma-Ray Radiated Fiber Lasers[J]. Chinese Journal of Lasers, 2020, 47(4): 0401004.