Mode-locked all-fiber laser with high stability based on cobalt oxyfluoride  

作　　者：Ximei Liu Mengli Liu Yaorong Wang Kai Huang Ming Lei Wenjun Liu Zhiyi Wei 刘茜美;刘孟丽;王耀荣;黄凯;雷鸣;刘文军;魏志义(State Key Laboratory of Information Photonics and Optical Communications,School of Science,Beijing University of Posts and Telecommunications,Beijing 100876,China;Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications,School of Science,Beijing University of Posts and Telecommunications,Beijing 100876,China [2]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Optics Letters》2021年第8期75-78,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (NSFC) (Nos.11875008 and 12075034);the Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications) (No.IPOC2019ZZ01);the Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology (No.SKL2018KF04)。

摘　　要：Recent years have witnessed the exploration of fiber laser technology focused on numerous pivotal optoelectronic applications from laser processing and remote sensing to optical communication. Here, using cobalt oxyfluoride(Co OF) as the nonlinear material, a 156 fs mode-locked fiber laser with strong stability is obtained. The rapid thermal annealing technique is used to fabricate the Co OF, which is subsequently transferred to the tapered region of the microfiber to form the effective pulse modulation device. Co OF interacts with the pulsed laser through the evanescent field to realize the intracavity pulse shaping, and then the stable mode-locked pulse is obtained. The mode-locked operation is maintained with the pulse duration of 156 fs and repetition rate of 49 MHz. In addition, the signal-to-noise ratio is about 90 d B. Those experimental results confirm the attractive nonlinear optical properties of Co OF and lay a foundation for the ultrafast application of lowdimensional transition metal oxides.

关 键 词：fiber laser nonlinear materials mode-locked fiber laser saturable absorber 

分 类 号：TQ138.12[化学工程—无机化工] TN248[电子电信—物理电子学]