1.09μm增益光纤制备及其激光特性的研究  

Fabrication of 1.09μm Gain Fiber and Study on Its Laser Characteristics

作　　者：隋杰卿 周晓阳 SUI Jieqing;ZHOU Xiaoyang(School of Information Science and Engineering,Shandong University,Qingdao 266200,Shandong,China)

机构地区：[1]山东大学信息科学与工程学院,山东青岛266200

出　　处：《光纤与电缆及其应用技术》2025年第1期4-8,共5页Optical Fiber & Electric Cable and Their Applications

摘　　要：单频光纤激光器具有窄线宽、低噪声、高转换效率、长相干长度和全光纤结构等优点,在高精度光谱测量、光纤传感、引力波探测、激光雷达和相干光通信等领域有着广泛的应用前景。Yb:YAG晶体衍生光纤具有高热导率、低非线性效应、低光暗化效应、高增益等特点,有益于实现更高功率的单频激光输出。为此,采用熔融芯法(MIT)制备了Yb:YAG晶体衍生光纤,并对其物理和光学性能进行表征。基于所制备的8mmYb:YAG晶体衍生光纤搭建了1091nm短直腔分布布拉格反射型(DBR)单频光纤激光器实验装置并研究了其单频激光的输出性能。研究结果表明,该1091nm单频光纤激光器的光-光转换效率为32.3%,输出激光中心波长为1091.2nm,信噪比为74dB,自由光谱范围为1.5GHz,20dB线宽为203kHz。Single-frequency fiber lasers have the advantages of narrow linewidth,low noise,high conversion efficiency,long coherence length,all-fiber structure and so on,which are widely used in the fields of high-precision spectral measurement,optical fiber sensing,gravitational wave detection,laser radar,and coherent optical communication,etc.The Yb:YAG crystal-derived optical fibers have the advantages of high thermal conductivity,low nonlinear effect,low photodarkening effect,and high gain,which are beneficial to realize higher power of single-frequency laser output.To this end,Yb:YAG crystal-derived fibers are prepared by the melt-in-tube(MIT)method,and their physical and optical properties are characterized.A 1091 nm short straight-cavity distributed Bragg reflector(DBR)single-frequency fiber laser experimental setup is constructed based on the prepared 8 mm Yb:YAG crystal-derived fiber,and its single-frequency laser output performance is investigated.The research results show that the 1 o91 nm single-frequency fiber laser has an optical-to-optical conversion efficiency of 32.3%,an output laser center wavelength of 1091.2 nm,a signal-to-noise ratio of 74 dB,a free spectral range of 1.5 GHz,and a 20 dB linewidth of 203 kHz.

关 键 词：增益光纤 单频光纤激光器 光纤制备 熔融芯法 分布布拉格反射型光纤激光器 激光特性 

分 类 号：TN244[电子电信—物理电子学] TN248.1