Deterministic chaos in laser with injected signal

Arecchi, F. T.; Lippi, G. L.; Puccioni, G. P.; Tredicce, J. R.

doi:10.1016/0030-4018(84)90016-6

Cited by 246 publications

(109 citation statements)

References 15 publications

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“…A classification of lasers due to Arecchi et al [ARE84] characterizes lasers by the order of magnitude of characteristic dynamic timescales of these three parts:…”

Section: Laser Dynamics -Relaxation Oscillationsmentioning

confidence: 99%

Nonlinear and Nonequilibrium Dynamics of Quantum-Dot Optoelectronic Devices

Lingnau

2015

Springer Theses

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In this thesis the dynamics and performance of optoelectronic devices based on semiconductor quantum-dots are investigated.In the first part, the dynamics of quantum-dot lasers under external perturbations is discussed. Using a microscopically based balance equation model that incorporates detailed charge-carrier scattering dynamics and the possibility to describe nonequilibrium between intra-band electronic states, the relaxation oscillations of the quantum-dot laser are investigated. Three qualitatively different dynamic regimes are identified in dependence of the scattering rates -the "constantreservoir" regime for slow scattering, the "overdamped" regime, and the "synchronized" regime for high scattering -characterized by a varying degree of nonequilibrium between the quantum-dot and reservoir states.Important differences to conventional lasers are found in the modulation response and the dynamics in optical injection and feedback setups. Common theoretical models and approaches used to describe these applications are shown to yield inaccurate predictions, especially in the "constant-reservoir" and "overdamped" dynamic regimes. An important consequence is that the amplitude-phase coupling in quantum-dot lasers, commonly described by the α-factor, differs from conventional descriptions due to the desynchronization of gain and refractive index. While the α-factor describes bifurcations of fixed points accurately, it fails in describing dynamic solutions and overestimates the extent of complex dynamics. The observed low sensitivity to optical perturbations in quantum-dot lasers can therefore be attributed partly to the charge-carrier nonequilibrium. Three quantum-dot laser models on different levels of sophistication are presented that can accurately describe the quantum-dot nonequilibrium dynamics.In the second part of the thesis, the performance of quantum-dot semiconductor optical amplifiers is investigated, and two types of applications unique to quantum-dots as active medium are discussed. The ground and excited states of the quantum-dots allow an ultra-broad-band amplification of optical data streams. Amplified signals on the ground-state frequencies are shown to generally exhibit higher quality than on the excited state, due to a lower sensitivity of the groundstate to carrier-density variations. Nevertheless the quantum-dot amplifier is found to allow effective amplification on both frequency ranges. Furthermore, a parameter range is identified that allows for a simultaneous amplification of data signals on the ground and excited state in a counter-propagating setup.The long microscopically polarization dephasing times in quantum-dots are found to enable quantum-coherent interactions on a macroscopic scale at room-temperature. By comparison with experiments, the occurrence of Rabi-oscillations by amplification of ultra-short pulses is demonstrated. Quantum-dot based devices could therefore be used for future applications based on quantum-coherent effects.

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“…A classification of lasers due to Arecchi et al [ARE84] characterizes lasers by the order of magnitude of characteristic dynamic timescales of these three parts:…”

Section: Laser Dynamics -Relaxation Oscillationsmentioning

confidence: 99%

Nonlinear and Nonequilibrium Dynamics of Quantum-Dot Optoelectronic Devices

Lingnau

2015

Springer Theses

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“…The dual-frequency laser, sustaining two orthogonal linear polarizations with a tunable frequency difference can perfectly fit the above mentioned applications. Such dual-frequency operation has been achieved for different solid-state lasers [6,7], but these lasers suffer from relatively strong intensity noise due to relaxation oscillations inherent to their class-B dynamical behavior [8]. The dual-frequency vertical-external-cavity surfaceemitting laser (DF-VECSEL) exhibits low noise due to its relaxation oscillation free class-A dynamical behavior, as the photon lifetime (∼10 ns) inside the cm-long external cavity is longer than the carriers' lifetime (∼3 ns) of the semiconductor gain medium.…”

Section: Introductionmentioning

confidence: 99%

Intensity- and phase-noise correlations in a dual-frequency vertical-external-cavity surface-emitting laser operating at telecom wavelength

Baili

Bouchoule³

et al. 2015

Phys. Rev. A

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The amplitude and phase noises of a dual-frequency vertical-external-cavity surface-emitting laser (DF-VECSEL) operating at telecom wavelength are theoretically and experimentally investigated in detail. In particular, the spectral behavior of the correlation between the intensity noises of the two modes of the DF-VECSEL is measured. Moreover, the correlation between the phase noise of the radio-frequency (RF) beatnote generated by optical mixing of the two laser modes with the intensity noises of the two modes is investigated. All these spectral behaviors of noise correlations are analyzed for two different values of the nonlinear coupling between the laser modes. We find that to describe the spectral behavior of noise correlations between the laser modes, it is of utmost importance to have a precise knowledge about the spectral behavior of the pump noise, which is the dominant source of noise in the frequency range of our interest (10 kHz to 35 MHz). Moreover, it is found that the noise correlation also depends on how the spatially separated laser modes of the DF-VECSEL intercept the noise from a multi-mode fiber-coupled laser diode used for pumping both the laser modes. To this aim, a specific experiment is reported, which aims at measuring the correlations between different spatial regions of the pump beam. The experimental results are in excellent agreement with a theoretical model based on modified rate equations.

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“…In a Class A laser, the laser approaches the equilibrium exponentially like an overdamped oscillator while in a Class B laser it slowly oscillates back to its stable steady-state like an underdamped oscillator, and these are the aforementioned ROs. Class A lasers include Ar, He-Ne, and dye lasers while Class B lasers include most of the lasers used today such as CO 2 ; solid state and SLs. When subject to optical injection, Class A and Class B lasers exhibit quite different stability properties.…”

Section: Introductionmentioning

confidence: 99%

Optically Injected Single-Mode Quantum Dot Lasers

Kelleher

Goulding

Hegarty

et al. 2012

Quantum Dot Devices

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The response of an optically injected quantum dot semiconductor laser is studied both experimentally and theoretically. Specifically, the locking boundaries are investigated, revealing features more commonly associated with Class A lasers rather than conventional Class B semiconductor lasers (SLs). Further, various dynamical regimes are observed including excitability and multistability. Of particular interest is the observation of a phase-locked bistability. We determine the stability diagram analytically using appropriate rate equations for quantum dot lasers. In particular, the saddle-node (SN) and Hopf bifurcations forming the locking boundaries are examined and are shown to reproduce the observed experimental stability features. The generation of the phase-locked bistability is also explained via a combination of these bifurcations.

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Deterministic chaos in laser with injected signal

Cited by 246 publications

References 15 publications

Nonlinear and Nonequilibrium Dynamics of Quantum-Dot Optoelectronic Devices

Nonlinear and Nonequilibrium Dynamics of Quantum-Dot Optoelectronic Devices

Intensity- and phase-noise correlations in a dual-frequency vertical-external-cavity surface-emitting laser operating at telecom wavelength

Optically Injected Single-Mode Quantum Dot Lasers

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