title: 152 fs nanotube-mode-locked thulium-doped all-fiber laser.
abstract: Ultrafast fiber lasers with broad bandwidth and short pulse duration have a variety of applications, such as ultrafast time-resolved spectroscopy and supercontinuum generation. We report a simple and compact all-fiber thulium-doped femtosecond laser mode-locked by carbon nanotubes. The oscillator operates in slightly normal cavity dispersion at 0.055 ps(2), and delivers 152 fs pulses with 52.8 nm bandwidth and 0.19 nJ pulse energy. This is the shortest pulse duration and the widest spectral width demonstrated from Tm-doped all-fiber lasers based on 1 or 2 dimensional nanomaterials, underscoring their growing potential as versatile saturable absorber materials.
authors.affiliation: Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Jinzhang
authors.initials: J
authors.lastname: Wang
authors.affiliation: Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Liang
authors.affiliation: Cambridge Graphene Centre, University of Cambridge, Cambridge CB3 0FA, United Kingdom.
authors.forename: Guohua
authors.initials: G
authors.lastname: Hu
authors.affiliation: Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Zhijian
authors.initials: Z
authors.lastname: Zheng
authors.affiliation: Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Shenghua
authors.initials: S
authors.lastname: Lin
authors.affiliation: Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Deqin
authors.initials: D
authors.lastname: Ouyang
authors.affiliation: Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Wu
authors.affiliation: Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Peiguang
authors.initials: P
authors.lastname: Yan
authors.affiliation: Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
authors.forename: Shuangchen
authors.initials: S
authors.lastname: Ruan
authors.affiliation: Department of Micro- and Nanosciences, Aalto University, Aalto, FI-00076, Finland.
authors.forename: Zhipei
authors.initials: Z
authors.lastname: Sun
authors.affiliation: Cambridge Graphene Centre, University of Cambridge, Cambridge CB3 0FA, United Kingdom.
authors.forename: Tawfique
authors.initials: T
authors.lastname: Hasan