Abstract

We propose and experimentally demonstrate a widely tunable mode-locked thulium-doped fiber laser. The laser can operate at both continuous-wave and mode-locked states at different pump power levels. A classic nonlinear polarization rotation structure is employed to obtain the passive mode-locked laser. A birefringence Lyot filter as a fiber comb filter is used to expand the tuning range. Thanks to the filtering component, the tuning range of the continuous-wave laser can reach 127 nm (1823–1950 nm). The tuning ranges of the single-wavelength and dual-wavelength mode-locked lasers are 94 nm (1835–1929 nm) and 87 nm (1831–1918 nm), respectively, with a 3.085 MHz repetition rate and 75 ps pulse width.

© 2017 Optical Society of America

All-fiber wavelength-tunable Tm-doped fiber laser mode locked by SESAM with 120 nm tuning range

Zhuo Xu, Zhi-Yuan Dou, Jing Hou, and Xiao-Jun Xu
Appl. Opt. 56(21) 5978-5981 (2017)

Widely tunable multiwavelength thulium-doped fiber laser using a fiber interferometer and a tunable spatial mode-beating filter

Wanzhuo Ma, Tianshu Wang, Peng Zhang, Jian Han, and Jing Zhang
Appl. Opt. 54(12) 3786-3791 (2015)

Nanotube mode-locked, wavelength and pulsewidth tunable thulium fiber laser

Ruihong Dai, Yafei Meng, Yao Li, Jiarong Qin, Shining Zhu, and Fengqiu Wang
Opt. Express 27(3) 3518-3527 (2019)

1867–2010 nm tunable femtosecond thulium-doped all-fiber laser

Biao Sun, Jiaqi Luo, Zhiyu Yan, Kun Liu, Junhua Ji, Ying Zhang, Qi Jie Wang, and Xia Yu
Opt. Express 25(8) 8997-9002 (2017)

Fiber-based dynamically tunable Lyot filter for dual-wavelength and tunable single-wavelength mode-locking of fiber lasers

Yuanjun Zhu, Zekun Cui, Xiangnan Sun, Takuma Shirahata, Lei Jin, Shinji Yamashita, and Sze Yun Set
Opt. Express 28(19) 27250-27257 (2020)