Calculations are reported of the dynamic evolution transverse modes in vertical cavity surface emitting lasers (VCSEL's). It is shown that spatial distribution modal fields plays an important role determining steady-state operating characteristics device. found spatially separated can coexist by sharing available gain, whereas strong competition occurs between have a overlap. The influence carrier diffusion and holeburning during turn-on transient laser elucidated, implications for...

We report a first experimental study of the nonlinear dynamics appearing in 1550 nm single-mode VCSEL subject to parallel and orthogonal optical injection.For time our knowledge we experimentally measured stability maps identifying boundaries between regions different for both cases polarized injection.A rich variety behaviours, including periodic (limit cycle, period doubling) chaotic have been observed.©2010 Optical Society America

A complete characterization of the working parameters a long-wavelength vertical-cavity surface-emitting laser (VCSEL) is presented. technique described for extracting values semiconductor rate equations based on simple expressions power and linewidth as function bias current. The differential carrier lifetime at threshold estimated by using linear relation between current that obtained below operation. High resolution CW optical spectrum measurements are performed to apply this extraction...

We have performed a systematic experimental and simulation analysis of the optical frequency combs generated by gain-switching single mode laser diodes, either free-running or subjected to injection. The simulations been produced with dynamical model consisting three rate equations that include stochastic noise terms. parameters extracted from experiments. An exhaustive comparison between simulated temporal profiles spectra under wide range switching injection conditions has performed....

Abstract We report a theoretical and experimental study of phase noise in semiconductor lasers when the bias current is below threshold value. The performed by using two types rate equations, with additive multiplicative terms. find conditions for which evolution those equations can be described 1-dimensional dimensional Brownian motions, respectively. main statistical differences between models are then illustrated simplified motion models. Additive predictions compared measurements coherent...

Polarization switching (PS) appearing in long-wavelength vertical-cavity surface-emitting lasers (VCSELs) subject to orthogonal optical injection is investigated theoretically and experimentally. We have studied the injected power required for PS as a function of frequency detuning between light linear polarization VCSEL. For wide range bias currents applied device, occurrence exhibited minimum plateau with respect detuning. The (plateau) was found at negative (positive) bistable behavior...

In this paper we report a new method of photonic generation microwave signals using multi-transverse mode VCSEL subject to two-frequency optical injection. Numerical simulations show that double injection locking involving two transverse modes can be obtained in these systems. We the higher-order is excited with much larger amplitude than fundamental mode. The comparison case single-transverse similar shows operation enhances performance system. Broad tuning ranges, beyond THz region, and...

A measurement of the parameters characterizing polarization behavior a 1550 nm single transverse mode vertical-cavity surface-emitting laser (VCSEL) is presented from analysis CW high-resolution optical spectra. Current-induced switching (PS) observed in our device. minimum absolute value effective dichroism at PS point. The birefringence has discontinuity current which observed. Birefringence oscillations with bias are also characteristics used for extraction describing VCSEL. Obtained...

An analysis has been undertaken of the effect birefringence on selection polarization states a weakly index guided vertical-cavity surface-emitting laser (VCSEL) supporting both fundamental and first-order transverse mode. It is shown that for small steps switching due to spatial-hole burning effects can occur. For larger it found higher order modes emerge which are orthogonally polarized dominant

A theoretical proposal to double the pulse repetition frequency by alternating current modulation of two orthogonal high-order transverse modes a vertical-cavity surface-emitting laser (VCSEL) is presented. Static and dynamic characteristics weakly index-guided VCSELs in multitransverse mode regime are analyzed. An efficient model that takes into account all supported waveguide developed. Mode partition noise modulated VCSEL studied, taking azimuthal degree freedom. Different can be excited...

A chaotic semiconductor laser subject to double optical feedback is characterised in terms of the statistical analysis, power spectrum analysis and forecast error dynamics. Varying relative lengths two external cavities, dynamics are observed compared that a single cavity. We show case integer multiple external-cavity round-trip time delays can be deduced from analysis. In fractional cavity lengths, only mean value resonance frequencies spectra hence cannot found. Cavity differ more than 0.4...

In this paper, we report on theoretical and experimental investigation polarization transverse mode behavior of vertical-cavity surface-emitting lasers (VCSELs) under orthogonal optical injection as a function the strength detuning between frequency free-running solitary laser. As increases VCSEL switches to master laser polarization. We find that power necessary obtain such switching is minimum at two different values detuning: first one corresponds splitting linearly polarized fundamental...

In this paper, we summarize our recent results on nonlinear polarization- and transverse-mode dynamics of vertical-cavity surface-emitting lasers (VCSELs) induced by optical injection (OI) or current modulation. Due to the surface emission cylindrical symmetry, VCSELs lack strong polarization anisotropy may undergo switching (PS). Furthermore, emit light in multiple transverse modes. This provides new features rich an external perturbation. We demonstrate for case orthogonal OI that Hopf...

The present theoretical work studies optical frequency combs (OFCs) associated with both linear polarizations of a gain switching vertical-cavity surface-emitting laser (VCSEL) subject to injection arbitrary polarization. overall OFC, formed by the two orthogonally polarized sub-combs, can have an expanded span in agreement experiments reported Prior et al. We show that maximum is obtained for certain angle between linearly and direction emission main mode free-running VCSEL. find this...

We report on the experimental generation of broad and flat optical frequency combs (OFC) in a 1550 nm laser diode using gain switching with pulsed electrical excitation together injection. The combination both techniques allows high-quality OFCs at repetition 500 MHz, showing low-noise spectrum unprecedent features terms width (108 tones within 10 dB) flatness (56 3 comparison those previously reported for this modulation frequency. influence injection conditions OFC quality is studied....

In this paper, we report an experimental and theoretical study of the random excitation linearly polarized modes a gain-switched VCSEL characterized by having polarization switching under continuous wave operation. We show that equal probability both can be achieved adjusting modulation conditions sampling time. Our is such bistable region associated to very narrow, indicating process polarizations works independently existence those regions. A characterization performed analyzing dependence...

Summary form only given. Polarisation characteristics of vertical cavity surface-emitting lasers (VCSELs) exhibit significant differences to those edge-emitting semiconductor lasers. In general the polarization fundamental transverse mode can change when injected current is altered. It has also been noted that strain induced during fabrication causes birefringence in VCSELs. this work we present numerical calculations demonstrate small refraction index anisotropies select VCSEL.

In this paper, we report on an experimental investigation of the bistable behavior a 1550 nm single transverse and polarization mode vertical-cavity surface-emitting laser (VCSEL) when subjected to orthogonal optical injection. As master wavelength is scanned near resonance depressed linearly polarized fundamental mode, for fixed injected power, VCSEL exhibits two successive switchings (PSs). Both PSs exhibit regions in such way that pure-frequency-induced bistability found. The width both...

We have measured optical power and wavelength polarization bistability in a 1550nm-Vertical Cavity Surface-Emitting Laser (VCSEL) subject to orthogonally-polarized injection into the orthogonal of fundamental transverse mode.Optical with very wide hysteresis cycles, up four times wider than previously reported results has been for both domain.We also report experimental observation three different shapes bistability, anticlockwise, clockwise X-Shape all them cycles.This rich variety...

We experimentally and theoretically investigate the photonic generation of microwave signals using a long-wavelength single-transverse-mode vertical-cavity surface-emitting laser (VCSEL) subject to two-frequency orthogonal optical injection. study if significant reduction linewidth is achieved in double injection locking regime. In this regime, VCSEL by two master lasers such way that stable also observed only light from one injected. Our model includes effect injected reflected at VCSEL's...

Polarization switching in a long-wavelength vertical-cavity surface-emitting laser (VCSEL) under parallel optical injection is analyzed theoretical and experimental way. For the first time, to our knowledge, we report experimentally state which locking of polarization excitation free-running orthogonal VCSEL are simultaneously obtained. We obtain very simple analytical expressions that describe both linear polarizations. show power polarizations depend linearly on injected such way total...

We study polarization switching and transverse-mode competition in vertical-cavity surface-emitting lasers (VCSELs) the absence of temperature effects. use a model that incorporates vector nature laser field, saturable dispersion, different carrier populations associated with magnetic sublevels conduction heavy hole valence bands quantum-well media, spin-flip relaxation processes cavity birefringence dichroism. consider both index- gain-guided VCSELs we find dynamics linewidth enhancement...