Cavity Solitons in VCSEL Devices

Barbay, Sylvain; Kuszelewicz, R.; Tredicce, J. R.

doi:10.1155/2011/628761

Cited by 36 publications

(24 citation statements)

References 165 publications

(242 reference statements)

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“…Numerous examples have been found in nonlinear optical resonators with coherent forcing (they often receive the name of spatial or temporal cavity solitons) [1][2][3][4][5][6] but also in laser systems [7][8][9][10] . In the latter case, the phase of the electric field is free to evolve in the course of time and a paradigmatic model is the cubic-quintic Ginzburg-Landau equation 7,[11][12][13] .…”

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confidence: 99%

Topological solitons as addressable phase bits in a driven laser

et al. 2015

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Optical localized states are usually defined as self-localized bistable packets of light, which exist as independently controllable optical intensity pulses either in the longitudinal or transverse dimension of nonlinear optical systems. Here we demonstrate experimentally and analytically the existence of longitudinal localized states that exist fundamentally in the phase of laser light. These robust and versatile phase bits can be individually nucleated and canceled in an injection-locked semiconductor laser operated in a neuron-like excitable regime and submitted to delayed feedback. The demonstration of their control opens the way to their use as phase information units in next-generation coherent communication systems. We analyse our observations in terms of a generic model, which confirms the topological nature of the phase bits and discloses their formal but profound analogy with Sine-Gordon solitons.

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confidence: 99%

Topological solitons as addressable phase bits in a driven laser

et al. 2015

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“…Localized structures of light in the transverse section of passive and active optical devices are often called cavity solitons. Since the experimental evidence of cavity solitons in semiconductor cavities [16][17][18][19][20], they have attracted growing interest in the nonlinear optics community due to potential applications for e.g., all-optical delay lines or logic gates [21,22]. Recently, much attention was paid to the investigation of the influence of delayed optical feedback on the stability properties of these structures [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Delay-induced depinning of localized structures in a spatially inhomogeneous Swift-Hohenberg model

et al. 2017

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We report on the dynamics of localized structures in an inhomogeneous Swift-Hohenberg model describing pattern formation in the transverse plane of an optical cavity. This real order parameter equation is valid close to the second order critical point associated with bistability. The optical cavity is illuminated by an inhomogeneous spatial gaussian pumping beam, and subjected to timedelayed feedback. The gaussian injection beam breaks the translational symmetry of the system by exerting an attracting force on the localized structure. We show that the localized structure can be pinned to the center of the inhomogeneity, suppressing the delay-induced drift bifurcation that has been reported in the particular case where the injection is homogeneous, assumming a continous wave operation. Under an inhomogeneous spatial pumping beam, we perform the stability analysis of localized solutions to identify different instability regimes induced by time-delayed feedback. In particular, we predict the formation of two-arm spirals, as well as oscillating and depinning dynamics caused by the interplay of an attracting inhomogeneity and destabilizing time-delayed feedback. The transition from oscillating to depinning solutions is investigated by means of numerical continuation techniques. Analytically, we use two approaches based on either an order parameter equation, describing the dynamics of the localized structure in the vicinity of the Hopf bifurcation or an overdamped dynamics of a particle in a potential well generated by the inhomogeneity. In the later approach, the time-delayed feedback acts as a driving force.

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“…the part of the optical injection that is used to ensure bistability of the system) in combination with a narrow writing beam (the part of optical injection which is used to locally make the system evolve from the lower branch of the bistability curve to the higher branch and vice versa) [2], frequency selective feedback with [5] or without [6] a writing beam, saturable absorption [7], amplifiers [8], optically injected lasers [9,10], "spatial translational coupling" introduced in [11,12], and others (see [13] for a review). LS can start to move spontaneously in the laser transverse section in the presence of saturable absorption [17].…”

Section: Introductionmentioning

confidence: 99%

Cavity solitons in vertical-cavity surface-emitting lasers

et al. 2014

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5We investigate a control of the motion of localized structures of light by means of delay feedback in the transverse section of a broad area nonlinear optical system. The delayed feedback is found to induce a spontaneous motion of a solitary localized structure that is stationary and stable in the absence of feedback. We focus our analysis on an experimentally relevant system namely the Vertical-Cavity Surface-Emitting Laser (VCSEL). In the absence of the delay feedback we present experimental evidence of stationary localized structures in a 80 µm aperture VCSEL. The spontaneous formation of localized structures takes place above the lasing threshold and under optical injection. Then, we consider the effect of the time-delayed optical feedback and investigate analytically the role of the phase of the feedback and the carrier lifetime on the self-mobility properties of the localized structures. We show that these two parameters affect strongly the space time dynamics of two-dimensional localized structures. We derive an analytical formula for the threshold associated with drift instability of localized structures and a normal form equation describing the slow time evolution of the speed of the moving structure.

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Cavity Solitons in VCSEL Devices

Cited by 36 publications

References 165 publications

Topological solitons as addressable phase bits in a driven laser

Topological solitons as addressable phase bits in a driven laser

Delay-induced depinning of localized structures in a spatially inhomogeneous Swift-Hohenberg model

Cavity solitons in vertical-cavity surface-emitting lasers

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