Yb-doped passively mode-locked fiber laser with Bi2Te3-deposited

• Published in: 中国物理B：英文版 2015-12 (12), p.329-333
• Main Author: 李璐 闫培光 王勇刚 段利娜 孙航 司金海
• Format: Article
• Language: English
• Subjects: Bi2Te3; 可饱和吸收体; 吸收装置; 掺镱光纤激光器; 电沉积; 脉冲持续时间; 脉冲激光沉积; 被动锁模
• ISSN: 1674-1056; 2058-3834
• DOI: 10.1088/1674-1056/24/12/124204

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.