Generation of high-energy pulses from an all-normal-dispersion figure-8 fiber laser

Pottiez, O.; Ibarra-Escamilla, B.; Kuzin, E. A.; Grajales-Coutiño, R.; Carrillo-Delgado, C. M.

doi:10.1134/s1054660x10050166

Cited by 13 publications

(9 citation statements)

References 22 publications

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“…The laser is impervious to the environment, but the pulse energy is only 0.3 nJ. Numerical simulation suggests that pulse energies of tens of nanojoules should be achieved in normal-dispersion fiber lasers that employ a NOLM or NALM [11]. Very recently, 10 nJ and 240 fs pulses were achieved with a NALM [12].…”

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confidence: 99%

“…For fixed loop length the largest modulation depth occurs for α closest to 50, where the coupling ratio is α : (100 – α), but the highest peak power is required to reach the first maximum [7]. This is the approach taken in prior lasers with NOLMs [9–11]. Smaller peak power is required to reach the first maximum in a NOLM biased further from equal splitting, but less modulation depth is obtained.…”

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confidence: 99%

“…The former is required for self-starting operation, and the latter is required for effective suppression of the background. With birefringent fiber, a polarization controller (PC) is generally inserted in the loop to control the linear phase shift that allows biasing the curve for increased transmission near zero power [11]. …”

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confidence: 99%

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Generation of 8 nJ pulses from a dissipative-soliton fiber laser with a nonlinear optical loop mirror

et al. 2013

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Theoretical and experimental investigations of the behavior of normal-dispersion fiber lasers with nonlinear-optical loop mirrors are presented. The use of a loop mirror causes the laser to generate relatively long, flat-topped pulses. The pulse energy can be high, but the pulse duration is limited to greater than 300 fs. Experimentally, 8-nJ pulses that can be dechirped to 340 fs duration are obtained. The laser is a step toward an all-fiber, environmentally-stable design.

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Generation of 8 nJ pulses from a dissipative-soliton fiber laser with a nonlinear optical loop mirror

et al. 2013

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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%

“…Operating States in Fibre Lasers 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 absorber, 4 and currently receiving renewed interest as a flexible, low-cost all-fibre ultrafast source. [26][27][28][29][30][31][32] F8 lasers consist of a unidirectional and bidirectional ring. The bidirectional ring forms a loop mirror that is imbalanced (either actively or passively) to induce a differential phase, and consequently a power-dependent reflectivity that mimics the action of a saturable absorber, promoting pulse generation in the main laser cavity.…”

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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Generation of 1.7-μJ pulses at 1.55 μm by a self-mode-locked all-fiber laser with a kilometers-long linear-ringcavity

et al. 2010

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We report on the record-high pulse energy of nearly 1.7 μJ obtained directly from a self-mode-locked all-fiber erbium laser with a linear-ring cavity owing its extreme elongation up to several kilometers. Specially selected telecommunication fibers, providing large normal net cavity dispersion in the vicinity of 1.55 μm, have been used for this purpose. Along with compensation for polarization instability in the longer linear arm of the cavity, such approach has ensured stable wavebreaking-free mode-locked lasing with an ultra-low pulse repetition rate of 35

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Generation of high-energy pulses from an all-normal-dispersion figure-8 fiber laser

Cited by 13 publications

References 22 publications

Generation of 8 nJ pulses from a dissipative-soliton fiber laser with a nonlinear optical loop mirror

Generation of 8 nJ pulses from a dissipative-soliton fiber laser with a nonlinear optical loop mirror

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

Generation of 1.7-μJ pulses at 1.55 μm by a self-mode-locked all-fiber laser with a kilometers-long linear-ringcavity

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