Few-cycle spatiotemporal optical solitons in waveguide arrays

Leblond, Hervé; Kremer, David; Mihalache, Dumitru

doi:10.1103/physreva.95.043839

Cited by 22 publications

(8 citation statements)

References 70 publications

(82 reference statements)

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“…We begin our analysis by first considering a Kerr nonlinear multimode tight-binding model—a one-dimensional photonic array comprised of M evanescently coupled single-mode waveguides with nearest neighbor coupling 41 , 42 (a situation most relevant to experimental implementations), as shown in Fig. 2a .…”

Section: Resultsmentioning

confidence: 99%

Universality of light thermalization in multimoded nonlinear optical systems

Zhong

Hassan

et al. 2023

Nat Commun

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Recent experimental studies in heavily multimoded nonlinear optical systems have demonstrated that the optical power evolves towards a Rayleigh–Jeans (RJ) equilibrium state. To interpret these results, the notion of wave turbulence founded on four-wave mixing models has been invoked. Quite recently, a different paradigm for dealing with this class of problems has emerged based on thermodynamic principles. In this formalism, the RJ distribution arises solely because of ergodicity. This suggests that the RJ distribution has a more general origin than was earlier thought. Here, we verify this universality hypothesis by investigating various nonlinear light-matter coupling effects in physically accessible multimode platforms. In all cases, we find that the system evolves towards a RJ equilibrium—even when the wave-mixing paradigm completely fails. These observations, not only support a thermodynamic/probabilistic interpretation of these results, but also provide the foundations to expand this thermodynamic formalism along other major disciplines in physics.

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Section: Resultsmentioning

confidence: 99%

Universality of light thermalization in multimoded nonlinear optical systems

Zhong

Hassan

et al. 2023

Nat Commun

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“…In recent decades, theoretical and experimental studies of the nonlinear dynamics of wave fields in multi-core fibers (MCFs), consisting of identical equidistantly spaced weakly coupled cores, have intensified in order to eliminate filamentation instability in the transverse direction, which is a fundamental limitation on the generation and use of high-power laser pulses. A number of interesting results have been obtained in such MCFs: supercontinuum generation [23][24][25], the laser pulse compression [24][25][26][27][28][29][30][31][32], nonlinear switching [33] and the light bullet formation [24][25][26][27][28][29][30][34][35][36][37]. However, most of them were obtained for in-phase field distributions, which are influenced by a discrete analogue of filamentation instability and stochasticity [38].…”

Section: Introductionmentioning

confidence: 99%

Out-of-phase few-cycle solitons in multicore fibers

Skobelev,

Balakin,

Anashkina

et al. 2021

Preprint

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An equation is derived for analyzing the self-action of a wave packets with few optical cycles in multicore fibers (MCF). A new class of stable out-of-phase spatio-temporal solitons with few cycle durations in the MCF with cores located in a ring is found and analyzed. The stability boundary of the obtained solutions is determined. As an example of using such solitons, we considered the problem of their self-compression in the process of multisoliton dynamics in the MCF. The formation of laser pulses with a duration of few optical cycles at the output of a ten-core MCF is shown.

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“…One of the current trends in modern fiber optics is associated with the use of micro-and nano-structured systems for the light flux control. In recent years, a whole section of nonlinear science has been formed, which is devoted to theoretical and experimental studies of wave processes in spatially periodic nonlinear media, in which main attention is focused on the following issues: supercontinuum generation [1,2], shortening of laser pulse duration [3][4][5][6][7][8][9], control of the wave field structure [10][11][12][13][14][15], formation of light bullets [16][17][18][19][20][21][22], soliton-like solutions [22,23], and generation of intense laser pulses in active fiber systems.…”

Section: Introductionmentioning

confidence: 99%

Multicore-fiber solitons and laser-pulse self-compression at light-bullet excitation in the central core of multicore fibers

2019

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The propagation of laser pulses in multi-core fibers (MCF) made of a central core and an even number of cores located in a ring around it is studied. Approximate quasi-soliton homogeneous solutions of the wave field in the considered MCF are found. The stability of the in-phase soliton distribution is shown analytically and numerically. At low energies, its wave field is distributed over all MCF cores and has a duration, which exceeds the duration of the NSE soliton with the same energy by many (five-six) times. On the contrary, almost all of the radiation at high energies is concentrated in the central core with a duration similar to the NSE soliton. The transition between the two types of distributions is very sharp and occurs at a critical energy, which is weakly dependent on the number of cores and on the coupling coefficient with the central core. The self-compression mechanism of laser pulses was proposed. It consists in injecting such MCF with a wave packet being similar to the found soliton and having an energy larger than the critical value. It is shown that the compression ratio weakly depends on the energy and the number of cores and is approximately equal to 6 times with an energy efficiency of almost 100%. The use of longer laser pulses allows one to increase the compression ratio up to 30-40 times with an energy efficiency of more than 50%. The obtained analytical estimates of the compression ratio and its efficiency are in good agreement with the results of numerical simulation.

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Few-cycle spatiotemporal optical solitons in waveguide arrays

Cited by 22 publications

References 70 publications

Universality of light thermalization in multimoded nonlinear optical systems

Universality of light thermalization in multimoded nonlinear optical systems

Out-of-phase few-cycle solitons in multicore fibers

Multicore-fiber solitons and laser-pulse self-compression at light-bullet excitation in the central core of multicore fibers

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