Observation of soliton molecules in a spatiotemporal mode-locked multimode fiber laser

Qin, Huaqiang; Xiao, Xiaosheng; Wang, Pan; Yang, Changxi

doi:10.1364/ol.43.001982

Cited by 149 publications

(71 citation statements)

References 22 publications

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“…The nonlinear propagation in the MMF lasers is closely related to a complex spatiotemporal mixing process caused by the nonlinearity and waveguide imperfections. 178 Recently, the spatiotemporal dynamics of optical pulses have been demonstrated in the MMFs, such as the spatiotemporal mode-locking, 179 the soliton molecules, 180 harmonic mode locking, 181 the spatiotemporal instability, 182 and beam self-cleaning. 183 This research provides new approaches for exploring RW generation in the MMF lasers.…”

Section: Rogue Waves Based On the Multimode Fiber Or Multimode Fiber mentioning

confidence: 99%

Recent progress on optical rogue waves in fiber lasers: status, challenges, and perspectives

Song

Wang

et al. 2020

Adv. Photon.

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Rogue waves (RWs) are rare, extreme amplitude, localized wave packets, which have received much interest recently in different areas of physics. Fiber lasers with their abundant nonlinear dynamics provide an ideal platform to observe optical RW formation. We review recent research progress on rogue waves in fiber lasers. Basic concepts of RWs and the mechanisms of RW generation in fiber lasers are discussed, along with representative experimental and theoretical results. The measurement methods for RW identification in fiber lasers are presented and analyzed. Finally, prospects for future RW research in fiber lasers are summarized.

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Section: Rogue Waves Based On the Multimode Fiber Or Multimode Fiber mentioning

confidence: 99%

Recent progress on optical rogue waves in fiber lasers: status, challenges, and perspectives

Song

Wang

et al. 2020

Adv. Photon.

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“…In addition to the aforementioned studies, spatiotemporal mode-locking was demonstrated with graded-index multimode fibers in multimode fiber laser cavities by Wright et al [21]. Later, observations of the bound state solitons (soliton molecules) and harmonic mode-locking reported in spatiotemporal mode-locked fiber lasers [22,23]. All of these studies presented laser cavities featuring dissipative soliton pulses with Gaussian temporal profile and low output beam quality.…”

mentioning

confidence: 96%

“…3(a-inset)). We observe that spatial filtering is necessary to achieve spatiotemporal mode-locking similarly to dissipative soliton pulses in multimode fiber lasers [21,22]. Beam profiles are measured by a 4f-system with 1.5 magnification.…”

mentioning

confidence: 97%

Spatiotemporal self-similar fiber laser

Teğin

Kakkava

Rahmani

et al. 2019

Optica

116

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In this Letter, we demonstrate, to the best of our knowledge, the first spatiotemporally mode-locked fiber laser with self-similar pulse evolution. The multimode fiber oscillator generates parabolic amplifier similaritons at 1030 nm with 90 mW average power, 2.3 ps duration, and 37.9 MHz repetition rate. Remarkably, we observe experimentally a near-Gaussian beam quality (M 2 <1.4) at the output of the highly multimode fiber. The output pulses are compressed to 192 fs via an external grating compressor. Numerical simulations are performed to investigate the cavity dynamics which confirm experimental observations of selfsimilar pulse propagation. The reported results open a new direction to investigate new types of pulse besides beam shaping and nonlinear dynamics in spatiotemporal mode-locked fiber lasers.

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“…Multimode fibers (MMFs) have found applications in several fields in the last decades mainly in telecommunication and imaging 1,2 . In recent years, spatiotemporal nonlinearities in MMFs, have become the subject of strong interest in various fundamental and applied areas, from single-pass propagation to spatiotemporally mode-locked laser cavities [3][4][5] . In the single-pass nonlinear propagation studies, by using different pulse types from visible to IR wavelengths with a Gaussian beam profile numerous interesting phenomenon [6][7][8][9][10][11][12][13][14][15] including spatiotemporal instability, self-beam cleaning and supercontinuum generation are reported with graded-index multimode fibers (GRIN MMFs).…”

Section: Introductionmentioning

confidence: 99%

Controlling spatiotemporal nonlinearities in multimode fibers with deep neural networks

et al. 2020

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Spatiotemporal nonlinear interactions in multimode fibers are of interest for beam shaping and frequency conversion by exploiting the nonlinear propagation of different pump regimes from quasi-continuous wave to ultrashort pulses centered around visible to infrared pump wavelengths. The nonlinear effects in multi-mode fibers depend strongly on the excitation condition, however relatively little work has been reported on this subject. Here, we present the first machine learning approach to learn and control the nonlinear frequency conversion inside multimode fibers by tailoring the excitation condition via deep neural networks. Trained with experimental data, deep neural networks are adapted to learn the relation between the spatial beam profile of the pump pulse and the spectrum generation. For different user-defined target spectra, network-suggested beam shapes are applied and control over the cascaded Raman scattering and supercontinuum generation processes are achieved. Our results present a novel method to tune the spectra of a broadband source.

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Observation of soliton molecules in a spatiotemporal mode-locked multimode fiber laser

Cited by 149 publications

References 22 publications

Recent progress on optical rogue waves in fiber lasers: status, challenges, and perspectives

Recent progress on optical rogue waves in fiber lasers: status, challenges, and perspectives

Spatiotemporal self-similar fiber laser

Controlling spatiotemporal nonlinearities in multimode fibers with deep neural networks

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