3,768 research outputs found
Compact graphene mode-locked wavelength-tunable erbium-doped fiber lasers: from all anomalous dispersion towards all normal dispersion
Soliton operation and soliton wavelength tuning of erbium-doped fiber lasers
mode locked with atomic layer graphene was experimentally investigated under
various cavity dispersion conditions. It was shown that not only wide range
soliton wavelength tuning but also soltion pulse width variation could be
obtained in the fiber lasers. Our results show that the graphene mode locked
erbium-doped fiber lasers provide a compact, user friendly and low cost
wavelength tunable ultrahsort pulse source
Vector Dissipative Solitons in Graphene Mode Locked Fiber Lasers
Vector soliton operation of erbium-doped fiber lasers mode locked with atomic
layer graphene was experimentally investigated. Either the polarization
rotation or polarization locked vector dissipative solitons were experimentally
obtained in a dispersion-managed cavity fiber laser with large net cavity
dispersion, while in the anomalous dispersion cavity fiber laser, the phase
locked NLSE solitons and induced NLSE soliton were experimentally observed. The
vector soliton operation of the fiber lasers unambiguously confirms the
polarization insensitive saturable absorption of the atomic layer graphene when
the light is incident perpendicular to its 2D atomic layer
Dynamics of soliton explosions in ultrafast fiber lasers at normal-dispersion
We found two kinds of soliton explosions based on the complex Ginzburg-Landau equation without nonlinearity saturation and high-order effects, demonstrating the soliton explosions as an intrinsic property of the dissipative systems. The two kinds of soliton explosions are caused by the dual-pulsing instability and soliton erupting, respectively. The transformation and relationship between the two kinds of soliton explosions are discussed. The parameter space for the soliton explosion in a mode-locked laser cavity is found numerically. Our results can help one to obtain or avoid the soliton explosions in mode-locked fiber lasers and understand the nonlinear dynamics of the dissipative systems
Impact of pulse dynamics on timing jitter in mode-locked fiber lasers
We investigate the high-frequency timing jitter spectral density of
mode-locked fiber lasers in different mode-locked regimes. Quantum
noise-limited timing jitter spectra of mode-locked-regime-switchable Yb fiber
lasers are measured up to the Nyquist frequency with sub-100 as resolution. The
integrated rms timing jitter of soliton, stretched-pulse, and self-similar Yb
fiber lasers is measured to be 1.8 fs, 1.1 fs, and 2.9 fs, respectively, when
integrated from 10 kHz to 40 MHz. The distinct behavior of jitter spectral
density related to pulse formation mechanisms is revealed experimentally for
the first time.Comment: 4 pages, 3 figure
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