掺Er³⁺/Yb³⁺光纤激光的理论分析

掺Er 3+ /Yb 3+ 光纤激光的理论分析 THEORETICAL ANALYSIS OF Er 3+ /Yb 3+ CODOPED FIBER LASER 徐造业 Xu Zaoye 1 first-author 李承芳 Li Chengfang 1 答孝义 Da Xiaoyi 1 靳志伟 Jin Zhiwei 1 池桂梅 Chi Guimei 1 武汉大学物理学系 武汉大学物理学系 Department of Physics,Wuhan University Department of Physics,Wuhan University 提出了光纤腔掺Ｅｒ３＋／Ｙｂ３＋光纤激光的模型和速率方程，推导了阈值泵浦功率的解析公式．运用数值求解方法，得到了光纤中反转粒子数分布、小信号增益系数和激光的输出功率．同时也给出了数值曲线，可用于掺Ｅｒ３＋／Ｙｂ３＋光纤激光器的优化设计． A model and rate equations of Er 3+ /Yb 3+ codoped fiber laser are proposed,and a analystical fomula of threshold pump power is obtained. Using numberical method,we have obtained the inverted populations distribtiion along the fiber cavity,small signal gain coeffciect and laser power. A few numerical plots have been presented and may been used as guidelines for the optimal design of the laser. Er3＋／Yb3＋ 光纤腔 光纤激光器 Er 3+ / Yb 3+ fiber cavity fiber laser TN244;TN248.1 国家自然科学基金,湖北省自然科学基金 1998-01-01 2021-04-01 1