High Power Laser Science and Engineering, 2020, 8 (2): 02000e14, Published Online: Apr. 30, 2020
Two-micron all-fiberized passively mode-locked fiber lasers with high-energy nanosecond pulse Download: 525次
Abstract
We report on mode-locked thulium-doped fiber lasers with high-energy nanosecond pulses, relying on the transmission in a semiconductor saturable absorber (SESA) and a carbon nanotube (CNTs-PVA) film separately. A section of an SMF–MMF–SMF structure multimode interferometer with a transmission peak wavelength of ~2003 nm was used as a wavelength selector to fix the laser wavelength. When the SESA acted as a saturable absorber (SA), the mode-locked fiber laser had a maximum output power of ~461 mW with a pulse energy of ~0.14 μJ and a pulse duration of ~9.14 ns. In a CNT-film-based mode-locked fiber laser, stable mode-locked pulses with the maximum output power of ~46 mW, pulse energy of ~26.8 nJ and pulse duration of ~9.3 ns were obtained. To the best of our knowledge, our experiments demonstrated the first 2 μm region ‘real’ SA-based dissipative soliton resonance with the highest mode-locked pulse energy from a ‘real’ SA-based all-fiberized resonator.
Meng Wang, Yijian Huang, Zongpeng Song, Jincheng Wei, Jihong Pei, Shuangchen Ruan. Two-micron all-fiberized passively mode-locked fiber lasers with high-energy nanosecond pulse[J]. High Power Laser Science and Engineering, 2020, 8(2): 02000e14.