We present three operation regimes with an L-band erbium-doped fiber laser passively mode-locked by a graphene oxide saturable absorber (GOSA) that is fabricated by using a wet chemical method. One is a stable state of single soliton emission with pulse duration of 426 fs, which is the shortest pulse duration ever achieved with an L-band design by employing GOSA as the mode-locker. The other two operation regimes include bound-state soliton and dual-wavelength nanosecond pulse generation, which are demonstrated for the first time by using the GOSA mode-locker. Our results further indicate the practical potential of GOSA in ultrafast fiber lasers for achieving various mode-locking regimes.
© 2014 Optical Society of America
Lasers and Laser Optics
Original Manuscript: December 9, 2013
Revised Manuscript: January 28, 2014
Manuscript Accepted: January 28, 2014
Published: March 6, 2014
Junqing Zhao, Yonggang Wang, Shuangchen Ruan, Peiguang Yan, Han Zhang, Yuen H. Tsang, Jinhui Yang, and Guoxi Huang, "Three operation regimes with an L-band ultrafast fiber laser passively mode-locked by graphene oxide saturable absorber," J. Opt. Soc. Am. B 31, 716-722 (2014)