All-normal dispersion fiber lasers mode-locked with a nonlinear amplifying loop mirror

Runge, Antoine F. J.; Aguergaray, Claude; Provo, Richard; Erkintalo, Miro; Broderick, Neil G. R.

doi:10.1016/j.yofte.2014.07.010

Cited by 84 publications

(42 citation statements)

References 40 publications

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“…We consider a Figure-8 (F8) laser design: one of the earliest reported passively mode-locked laser schemes, employing a nonlinear amplifying loop mirror (NALM) as an artificial saturable absorber4, and currently receiving renewed interest as a flexible all-fibre ultrafast source26272829303132. F8 lasers consist of a unidirectional and bidirectional ring.…”

Section: Self-optimising Laser Designmentioning

confidence: 99%

Towards ‘smart lasers’: self-optimisation of an ultrafast pulse source using a genetic algorithm

Woodward

Kelleher

2016

Sci Rep

117

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Short-pulse fibre lasers are a complex dynamical system possessing a broad space of operating states that can be accessed through control of cavity parameters. Determination of target regimes is a multi-parameter global optimisation problem. Here, we report the implementation of a genetic algorithm to intelligently locate optimum parameters for stable single-pulse mode- locking in a Figure-8 fibre laser, and fully automate the system turn-on procedure. Stable ultrashort pulses are repeatably achieved by employing a compound fitness function that monitors both temporal and spectral output properties of the laser. Our method of encoding photonics expertise into an algorithm and applying machine-learning principles paves the way to self-optimising ‘smart’ optical technologies.

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Section: Self-optimising Laser Designmentioning

confidence: 99%

Towards ‘smart lasers’: self-optimisation of an ultrafast pulse source using a genetic algorithm

Woodward

Kelleher

2016

Sci Rep

117

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“…However, exact characterization of fiber parameters, especially random birefringence in experiments, is difficult rendering predictions from the discrete models still qualitative in nature. However, it has been demonstrated that if the random polarization evolution is circumvented by using polarization maintaining fiber in the laser cavity [76][77][78], the pulse dynamics and output can be accurately predicted by discrete models which include higher order dispersions, self-steepening, and stimulated Raman scattering [61,79,80].…”

Section: Discrete Model Of Laser Cavitiesmentioning

confidence: 99%

Modeling Frequency Comb Sources

Yuan

Kang

et al. 2016

Nanophotonics

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Frequency comb sources have revolutionized metrology and spectroscopy and found applications in many fields. Stable, low-cost, high-quality frequency comb sources are important to these applications. Modeling of the frequency comb sources will help the understanding of the operation mechanism and optimization of the design of such sources. In this paper, we review the theoretical models used and recent progress of the modeling of frequency comb sources.

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“…Finally, to gain more insight on the explosion formation, we have modelled the cavity using a fully realistic iterative cavity map detailed in [56]. Briefly, the propagation of the optical pulse through each fiber segment (including those in the NALM) is simulated using a GNLSE, which includes stimulated and spontaneous Raman scattering as well as higher dispersion [57].…”

Section: Experimental Setup and Numerical Modelmentioning

confidence: 99%

Dynamics of soliton explosions in passively mode-locked fiber lasers

2015

Self Cite

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A soliton explosion is an instability whereby a dissipative soliton undergoes a sudden structural collapse, but remarkably returns back to its original shape after a short transient. We recently reported the first experimental observation of this effect in a fiber laser (A. F. J. Runge et al., Optica 2, 36 (2015)). Here, we expand on our initial work, presenting a more detailed experimental and numerical study of the characteristics and dynamics of soliton explosions in passively mode-locked fiber lasers. Specifically, we explore different cavity configurations and gain levels, observing and characterizing explosion events using spectral and temporal real-time single-shot techniques. Our results highlight that the explosion characteristics observed in experiments depend critically on the position in the cavity where the output coupler is located. Furthermore, we find that the frequency at which explosions occur can be controlled by adjusting the pump power. We also identify a new kind of ``partial'' explosion, where strong spectral interference fringes appear on the pulse spectra, but a full collapse is avoided. Finally, we perform numerical simulations based on a realistic iterative cavity map, and obtain results that are in good agreement with experimental measurements. Careful analysis of the simulation results provide strong credence to the interpretation that soliton explosions can be linked to a multi-pulsing instability

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All-normal dispersion fiber lasers mode-locked with a nonlinear amplifying loop mirror

Cited by 84 publications

References 40 publications

Towards ‘smart lasers’: self-optimisation of an ultrafast pulse source using a genetic algorithm

Towards ‘smart lasers’: self-optimisation of an ultrafast pulse source using a genetic algorithm

Modeling Frequency Comb Sources

Dynamics of soliton explosions in passively mode-locked fiber lasers

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