自由运转的掺镱光纤激光器激射波长的研究  

Study on lasing wavelength of free-running ytterbium-doped fiber lasers

作　　者：张金戈[1] 闫平[1] 蒋秋洁[1] 巩马理[1] 

机构地区：[1]清华大学精密仪器与机械学系光子与电子研究中心摩擦学国家重点实验室,北京100084

出　　处：《激光技术》2008年第3期234-236,247,共4页Laser Technology

摘　　要：为了更好地设计掺镱光纤激光器,提出了一种用于确定自由运转的掺镱光纤激光器激射波长的计算模型。利用此模型可以同时分析激射波长与光纤长度、腔的损耗、掺杂浓度、工作温度等系统参数的关系,从而有助于合理设计光纤激光器,得到所需的出射波长,并且有助于设计可调谐的光纤激光器。在推导中引入了一种确定掺杂光纤的发射、吸收截面随温度变化的近似处理方法,用此方法只需要常温下掺杂光纤的截面数据就能进行温度相关的分析。通过与已知实验结果的对比,验证了此模型的适用性。A theoretical model was proposed to calculate the lasing wavelength of free running ytterbium-doped fiber lasers. Based on this model, the relationship between lasing wavelength and fiber length, cavity loss, doping concentration as well as working temperature was obtained ,which can help desigtl tunable fiber lasers and fiber lasers with required lasing wavelengths. An approximation was introduced to deal with the temperature dependence of absorption and emission cross section of the doped fiber. The applicability of this model was examined by comparing calculation results with published experiment data.

关 键 词：激光技术 光纤激光器 激射波长 自由运转 

分 类 号：TN248.4[电子电信—物理电子学]