We consider a semiconductor microcavity driven by coherent and stationary holding beam, in two distinct configurations. In the first, no carriers are injected multiple-quantum-well structure optical nonlinearity is governed an excitonic resonance. The second corresponds to that of vertical-cavity surface-emitting laser kept slightly below threshold. describe both configurations using unified model includes field diffraction carrier diffusion. calculate numerically time evolution profile...

Optical localized states are usually defined as self-localized bistable packets of light, which exist independently controllable optical intensity pulses either in the longitudinal or transverse dimension nonlinear systems. Here we demonstrate experimentally and analytically existence that fundamentally phase laser light. These robust versatile bits can be individually nucleated canceled an injection-locked semiconductor operated a neuron-like excitable regime submitted to delayed feedback....

An all-optical delay line based on the lateral drift of cavity solitons in semiconductor microresonators is proposed and experimentally demonstrated. The functionalities device as well its performance analyzed compared with recent alternative methods decrease group velocity vicinity resonances. We show that current limitations can be overcome using broader devices tailored material responses.

We experimentally demonstrate the existence and control of cavity solitons in externally driven vertical-cavity semiconductor lasers above threshold. A model including material polarization dynamics is used to predict confirm experimental findings.

Cavity solitons are stationary self-organized bright intensity peaks which form over a homogeneous background in the section of broad area radiation beams. They generated by shining writing/erasing laser pulse into nonlinear optical cavity, driven holding beam. The ability to control their location and motion introducing phase or amplitude gradients beam makes them interesting as mobile pixels for all-optical processing units. We show generation number cavity broad-area vertical...

The stable positions of localized structures depend on spatial gradients in the system parameters and local defects hosting medium. We propose a general method to disclose visualize medium structure, otherwise not detected. is based observation spatiotemporal behavior presence controlled experimental parameters. experimentally show an application this broad-area semiconductor vertical cavity surface emitting laser with optical injection. comparison results numerical simulations shows very...

We experimentally demonstrate the existence of nondispersive solitary waves associated with a $2\ensuremath{\pi}$ phase rotation in strongly multimode ring semiconductor laser coherent forcing. Similarly to Bloch domain walls, such structures host chiral charge. The numerical simulations based on set effective Maxwell-Bloch equations support experimental evidence that only one sign charge is stable, which affects motion solitons. Furthermore, reduction model modified Ginzburg-Landau equation...

Cavity solitons (CSs) are localized structures appearing as intensity peaks in the homogeneous background of field emitted by a nonlinear microresonator. We experimentally and theoretically study switch-on process cavity semiconductor amplifiers. The switching time has two contributions: lethargic lapse following application pulse characteristic buildup time. While latter is not significantly affected control parameters, former crucially depends on them. Optimization parameters leads to less...

We study extreme events occurring in the transverse $(x,y)$ section of field emitted by a broad-area semiconductor laser with saturable absorber. The spatiotemporal on which we perform statistical analysis are identified as maxima intensity three-dimensional space $(x,y,t)$. identify regions parameter where more likely to occur and connection those cavity solitons that known exist same system, both stationary self-pulsing.

Injection-locked semiconductor lasers can be brought to a neuronlike excitable regime when parameters are set close the unlocking transition. Here we study experimentally response of this system repeated optical perturbations and observe existence refractory period during which not able elicit an response. The results analyzed via simulations dynamical equations reproduced adequately experimental results.

We show that a $40\text{\ensuremath{-}}\ensuremath{\mu}\mathrm{m}$-diameter vertical-cavity surface-emitting laser (VCSEL) is capable of supporting spatially localized structures with linear polarization, orthogonal to the principal polarization. The VCSEL biased above lasing threshold and emits well-defined polarization (principal polarization). A holding beam injected into cavity, structure spontaneously switched on. orthogonally polarized shown be bistable when injection current varied....

Cavity solitons (CS) are localized structures appearing as single intensity peaks in the homogeneous background of field emitted by a nonlinear (micro)resonator. In real devices, their position is strongly influenced presence defects device structure. this Letter we show that interplay between these and phase gradient driving induces spontaneous formation regular sequence CSs moving direction. Hence, behave built-in CS source, where generation rate can be set controlling system parameters.

The motion and position of cavity solitons in a vertical-cavity surface-emitting laser with optical injection are investigated. Spatial variations the phase injected field considered form sinusoidal triangular modulations. We show how velocity, distance traveled, final can be controlled by varying slope modulations response time semiconductor medium. Numerical simulations demonstrate feasibility an all-optical delay line soliton laser. Merging is observed when they collide at modulation...

We formulate a model that includes the thermal dynamics in time evolution of semiconductor multiple quantum-well microresonator, driven by coherent holding beam. This is analyzed case which active layer electrically pumped, such way device behaves like an amplifier, but, absence external beam, does not lase. The inclusion effects introduces Hopf instability, which, certain regions parameter space, dominates behavior system. In this our numerical simulations one transverse dimension, both...

In a semiconductor laser with saturable absorber, solitons may spontaneously drift and/or oscillate. We study three different regimes characterized by strong intensity oscillations, both periodic and chaotic. show that (i) soliton dynamics be similar to of passively Q-switched lasers, (ii) oscillate simultaneously, (iii) chaotic coexist stationary ones the off solution.

We analyze numerically the microscopic model formulated in a companion paper [J. Opt. Soc. Am. B16, 2083 (1999)] to describe an externally driven broad-area bulk GaAs microcavity. predict formation of patterns transverse profile output field. In particular, we find existence stable cavity solitons, which appear as self-organized light peaks embedded homogeneous background. study characteristics such structures and specifically possibility switching them on off at desired locations field...

The motion of a self-propelled cavity soliton in laser where the pump profile acts as square billiard is investigated. In long-term dynamics, only closed trajectories are possible, exhibiting nonspecular reflections with striking similarities to walking droplets vibrated liquid bath. Open orbits can be achieved either by introducing scattering defects or presence more than two solitons, due their interaction. Such dynamical properties exploited for applications such compact soliton-force microscope.