title: Wavelength-tunable picosecond soliton fiber laser with Topological Insulator: Bi2Se3 as a mode locker.
abstract: Based on the open-aperture Z-scan measurement, we firstly uncovered the saturable absorption property of the topological insulator (TI): Bi2Se3. A high absolute modulation depth up to 98% and a saturation intensity of 0.49 GWcm(-2) were identified. By incorporating this novel saturable absorber material into an erbium-doped fiber laser, wavelength tunable soliton operation was experimentally demonstrated. Our result indicates that like the atomic layer graphene, the topological insulator Bi2Se3 could also operate as an effective saturable absorber for the passive mode locking of lasers at the telecommunication band.
authors.affiliation: Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, College of Physics and Microelectronic Science, Hunan University, Changsha, China.
authors.forename: Chujun
authors.initials: C
authors.lastname: Zhao
authors.forename: Yanhong
authors.initials: Y
authors.lastname: Zou
authors.forename: Yu
authors.initials: Y
authors.lastname: Chen
authors.forename: Zhiteng
authors.initials: Z
authors.lastname: Wang
authors.forename: Shunbin
authors.initials: S
authors.lastname: Lu
authors.forename: Han
authors.initials: H
authors.lastname: Zhang
authors.forename: Shuangchun
authors.initials: S
authors.lastname: Wen
authors.forename: Dingyuan
authors.initials: D
authors.lastname: Tang
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D004867:Equipment Design; D004871:Erbium / Q000737:chemistry; D005336:Fiber Optic Technology / Q000295:instrumentation / Q000379:methods*; D006108:Graphite / Q000737:chemistry; D054025:Lasers, Dye; D016014:Linear Models; D008855:Microscopy, Electron, Scanning; D008962:Models, Theoretical; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods; D017711:Nonlinear Dynamics; D012643:Selenium / Q000737:chemistry*; D013685:Telecommunications / Q000295:instrumentation*
chemical_list: D006108:Graphite; D004871:Erbium; D012643:Selenium; D001729:Bismuth