Abstract

We report the generation of 2.06 W average-power and 232 nJ picosecond mode-locked pulses directly from an ultra-simple Yb-doped fiber laser. A section of Yb-doped double-clad fiber pumped by a 976 nm laser diode provides the large gain, and the linear cavity is simply formed by a 1064 nm highly reflective fiber Bragg grating and a fiber loop mirror (FLM) using a 5/95 optical coupler. The asymmetric FLM not only acts as the output mirror for providing $\sim 20\%$ optical feedback, but also equivalently behaves as a nonlinear optical loop mirror (NOLM) to initiate the mode-locking operation in this cavity. Stable mode-locking is therefore achieved over a pump power of 3.76 W. The mode-locked pulses show the dissipative soliton resonance (DSR), which has the pulse duration of 695 ps to $\sim 1\mathrm{ns}$, and the almost unchanged peak power of $\sim 200\mathrm{W}$ as increasing the pump power. In particular, this laser can emit 232 nJ high-energy DSR pulses with an average output power of $>2\mathrm{W}$. This is, to the best of our knowledge, the first demonstration of such an ultra-simple, mode-locked fiber laser that enables watt-level, high energy, picosecond DSR pulses.

© 2015 Optical Society of America

1.2-W average-power, 700-W peak-power, 100-ps dissipative soliton resonance in a compact Er:Yb co-doped double-clad fiber laser

Tuanjie Du, Zhengqian Luo, Runhua Yang, Yizhong Huang, Qiujun Ruan, Zhiping Cai, and Huiying Xu
Opt. Lett. 42(3) 462-465 (2017)

0.4  μJ, 7  kW ultrabroadband noise-like pulse direct generation from an all-fiber dumbbell-shaped laser

He Chen, Shengping Chen, Zongfu Jiang, and Jing Hou
Opt. Lett. 40(23) 5490-5493 (2015)

Compact all-fiber figure-9 dissipative soliton resonance mode-locked double-clad Er:Yb laser

Karol Krzempek, Jaroslaw Sotor, and Krzysztof Abramski
Opt. Lett. 41(21) 4995-4998 (2016)

Watt-level passively mode-locked Er³⁺-doped ZBLAN fiber laser at 2.8 μm

Pinghua Tang, Zhipeng Qin, Jun Liu, Chujun Zhao, Guoqiang Xie, Shuangchun Wen, and Liejia Qian
Opt. Lett. 40(21) 4855-4858 (2015)

Yb-fiber-laser-based, 1.8  W average power, picosecond ultraviolet source at 266  nm

S. Chaitanya Kumar, J. Canals Casals, E. Sanchez Bautista, K. Devi, and M. Ebrahim-Zadeh
Opt. Lett. 40(10) 2397-2400 (2015)