中国激光, 2019, 46 (5): 0501001, 网络出版: 2019-11-11
基于反抛物线型光纤的TE01和TM01模式输出激光器 下载: 940次
Anti-Parabolic-Fiber-Based Laser with TE01 and TM01 Mode Output
摘要
提出一种反抛物线型掺铒光纤,该光纤可以实现二阶模式组中简并矢量模式的有效分离。将其作为光纤激光器的增益介质,采用数值方法分析光纤中饵离子掺杂分布、饵离子掺杂浓度、光纤长度和抽运光功率对掺饵光纤激光器输出模式的影响。通过在光纤不同环形区域内掺杂饵离子,可以实现TE01模式或TM01模式的单独输出,并且激光器的斜率效率分别高达67.4%和63.5%,输出模式纯度分别高达99.97%和99.99%。所提的基于反抛物线型掺铒光纤的激光器具有斜率效率高、输出模式纯度高的优势,该光纤激光器可应用于高功率激光器、光纤通信和光纤传感等领域。
Abstract
An anti-parabolic erbium-doped fiber is proposed to effectively separate the degenerate vector modes in the second-order mode group. The proposed fiber is used as the gain medium of a laser, and the effects of erbium-dopant distribution, erbium-dopant concentration, fiber length, and pump power upon the output mode of the erbium-doped fiber laser are analyzed through numerical investigation. The TE01 or TM01 modes are obtained separately by doping erbium in different annular regions of the proposed fiber, and the slope efficiencies of the proposed fiber laser can reach 67.4% and 63.5%, with an output-mode purity reaching 99.97% and 99.99%, respectively. The proposed anti-parabolic-fiber-based erbium-doped laser has the merits of a high slope efficiency and high mode purity, and has many applications such as in high power lasers, optical-fiber communications, and optical-fiber sensing systems.
刘儒雅, 汤敏, 曹敏, 芈月安, 简伟, 任国斌. 基于反抛物线型光纤的TE01和TM01模式输出激光器[J]. 中国激光, 2019, 46(5): 0501001. Ruya Liu, Min Tang, Min Cao, Yuean Mi, Wei Jian, Guobin Ren. Anti-Parabolic-Fiber-Based Laser with TE01 and TM01 Mode Output[J]. Chinese Journal of Lasers, 2019, 46(5): 0501001.