Yb-doped passively mode-locked fiber laser with Bi_2Te_3-deposited  

作　　者：李璐 闫培光 王勇刚 段利娜 孙航 司金海 

机构地区：[1]State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences [2]Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Laboratory of Information Photonic Technique,School of Electronic and Information Engineering, Xi'an Jiaotong University [3]University of Chinese Academy of Sciences (CAS) [4]Shenzhen Key Laboratory of Engineering, Shenzhen University

出　　处：《Chinese Physics B》2015年第12期329-333,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.61378024);the Natural Science Fund of Guangdong Province;China(Grant No.S2013010012235)

摘　　要：In this study we present an all-normal-dispersion Yb-doped fiber laser passively mode-locked with topological insulator（Bi2Te3） saturable absorber. The saturable absorber device is fabricated by depositing Bi2Te3 on a tapered fiber through using pulsed laser deposition（PLD） technology, which can give rise to less non-saturable losses than most of the solution processing methods. Owing to the long interaction length, Bi2Te3 is not exposed to high optical power, which allows the saturable absorber device to work in a high power regime. The modulation depth of this kind of saturable absorber is measured to be 10%. By combining the saturable absorber device with Yb-doped fiber laser, a mode-locked pulse operating at a repetition rate of 19.8 MHz is achieved. The 3-d B spectral width and pulse duration are measured to be 1.245 nm and317 ps, respectively.In this study we present an all-normal-dispersion Yb-doped fiber laser passively mode-locked with topological insulator（Bi2Te3） saturable absorber. The saturable absorber device is fabricated by depositing Bi2Te3 on a tapered fiber through using pulsed laser deposition（PLD） technology, which can give rise to less non-saturable losses than most of the solution processing methods. Owing to the long interaction length, Bi2Te3 is not exposed to high optical power, which allows the saturable absorber device to work in a high power regime. The modulation depth of this kind of saturable absorber is measured to be 10%. By combining the saturable absorber device with Yb-doped fiber laser, a mode-locked pulse operating at a repetition rate of 19.8 MHz is achieved. The 3-d B spectral width and pulse duration are measured to be 1.245 nm and317 ps, respectively.

关 键 词：topological insulator mode-locked lasers pulsed laser deposition technology fiber lasers 

分 类 号：TN248[电子电信—物理电子学]