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We demonstrate the mode-locking operation in an all-polarization-maintaining (all-PM) erbium-doped fiber laser by exploiting graphene oxide saturable absorber for the first time. The self-started, environmentally stable laser directly generates linearly polarized soliton pulses of 502 fs duration at a repetition rate of 48.2 MHz with an extinction ratio of 21.3 dB. The optical spectrum centered at...
Square pulse generation from mode-locked fiber laser has been theoretically and experimentally studied for a few years. The phenomenon was explained theoretically as so called “dissipative soliton resonance (DSR)” [1]. Most experimental work concentrated on 1.5μm wavelength, with a few on 1μm, and both could be operated in positive or negative dispersion regimes. Most of them adopted nonlinear polarization...
We observed dissipative soliton resonance in graphene oxide mode-locked Yb-doped fiber laser, which delivered square-shaped nanosecond pulses of 0.52ns∼60.8ns and single pulse energy of 137.1nJ at 1064.9nm. The 3dB-bandwidth of Lorentz-shaped spectrum was 0.19nm.
Few-layer graphene oxide depositing on broadband reflective mirror as a novel saturable absorber for mode-locking of a thulium-doped fiber laser at 2007 nm, which generated 0.56 nJ single pulse energy at 3.17 MHz repetition rate.
We demonstrated an erbium-doped fiber laser in which graphene oxide was used as saturable absorber to generate stable 900 fs pulse trains with 1nJ single pulse energy at 17.5 MHz.
We report 70 ns pulse generation at 1064.2 nm from an Yb-doped fiber laser passively Q-switched by a graphene saturable absorber in a short linear cavity. The maximum output power was 12 mW and single pulse energy was 46 nJ. The pulse repetition rate of the laser can be widely tuned from 140 kHz to 257 kHz along with the increase of the pump power.
Since the first report of graphene-based ultrafast erbium-doped fiber laser in 2009 [1], most of follow-up studies have been concentrated on performance optimization and improvement of graphene saturable absorber mode-locked or Q-switched lasers at 1.5µm wavelength-band. By contrast, fewer studies have been reported on other wavelengths although graphene based saturable absorber has a distinguished...
High pulse-energy up to 163nJ is generated in a graphene mode-locked Yb-doped double-clad fiber laser with repetition-rate of 1.04-MHz. Graphene passive-Q-switched operation of ∼2.2μs pulse-width is also demonstrated with tunable repetition-rate from 6-kHz to 150-kHz.
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