CAJ | 학술논문

采用数值分析方法分析了光纤长度、后腔镜反射率等因素对激光器输出阈值泵浦功率、输出功率的影响,为全光纤激光器的优化设计提供了理论基础.在设计过程中采用光纤光栅作为光纤激光器的反馈与选频腔镜,通过锥度光纤实现了泵浦模块与掺镱双包层光纤之间的低损耗连接以及高效率的泵浦激光功率传输,成功研制了具备稳定窄化线宽激光输出的掺镱全光纤激光器.实验得到了波长峰值在1 082.50 nm,谱线宽度0.113 nm,最大输出功率8.5 W,泵浦阈值功率0.8 W,斜率效率为70.8%的稳定激光输出.
채용수치분석방법분석료광섬장도、후강경반사솔등인소대격광기수출역치빙포공솔、수출공솔적영향,위전광섬격광기적우화설계제공료이론기출.재설계과정중채용광섬광책작위광섬격광기적반궤여선빈강경,통과추도광섬실현료빙포모괴여참의쌍포층광섬지간적저손모련접이급고효솔적빙포격광공솔전수,성공연제료구비은정착화선관격광수출적참의전광섬격광기.실험득도료파장봉치재1 082.50 nm,보선관도0.113 nm,최대수출공솔8.5 W,빙포역치공솔0.8 W,사솔효솔위70.8%적은정격광수출.
By means of numerical analysis method,the influences of many factors on output threshold pumped and output powers were analyzed,such as fiber length and back cavity lens reflectivity.These results provide theoretical foundation for optimized design of all-fiber laser device.Yb-doped all-fiber laser device with stable narrowed spectral linewidth laser output was made successfully,using fiber gratings as feedback and frequency-selected cavity lens.Tapered fiber realizes low-loss conncection between pumped module and Yb-doped double cladding fiber,and high effective pumped laser output power transmission.The stable laser output can be gained in this test,of which the wavelength is 1 082.50 nm,spectrometric width is 0.113 nm,the largest stable laser output power is 8.5 W,pumped threshold power is 0.8 W,and slope effectivity is 70.8%.