Intrinsic gain switching in optically injected quantum dot laser lasing simultaneously from the ground and excited state

Olejniczak, Lukasz; Panajotov, Krassimir; Wieczorek, Sebastian; Thienpont, Hugo; Sciamanna, Marc

doi:10.1364/josab.27.002416

Cited by 20 publications

(11 citation statements)

References 17 publications

(29 reference statements)

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“…1 of Ref. [21]. However introducing an asymmetry between the electron and the hole dynamics as described by Viktorov et al [12] allows to reproduce this behavior.…”

Section: Introductionmentioning

confidence: 94%

“…Recently some of us demonstrated that the characteristics of the first excited state (lasing or not) can have a major impact on the dynamics of optically injected QD lasers [20], [21]. Indeed the intraband relaxation time from the ES to the GS can enlarge or reduce the locking region, modifying the excitability characteristics of the system [6].…”

Section: Introductionmentioning

confidence: 99%

“…Indeed the intraband relaxation time from the ES to the GS can enlarge or reduce the locking region, modifying the excitability characteristics of the system [6]. Additionally, in a two lasing state QD laser with an injected GS, one can either inhibit or induce complex self-pulsations on the excited state [21]. Nevertheless, only few studies considered the impact of optical feedback on the dynamics of such two state laser dynamics: two experimental studies used an optical feedback to either trigger the GS emission [14] or to stabilize the emission in a dual-mode two section QD laser [15].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mode Competition Induced by Optical Feedback in Two-Color Quantum Dot Lasers

Virte

Panajotov

Sciamanna

2013

IEEE J. Quantum Electron.

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We investigate theoretically the impact of optical feedback on quantum dot two-color laser dynamics when emitting from both the excited and the ground states. Detailed analysis of the laser dynamics is provided by numerical integrations and continuation techniques, as well as by analytical methods. As the feedback strength is increased the quantum dot laser undergoes a sequence of bifurcations involving steady-states, external cavity modes, self-pulsations and chaos. Furthermore, we report on two interesting mode competition results. First, the optical feedback favors the ground state emission; hence an increase of the feedback strength will generally lead to an increase of the ground state emission output power. Second, the optical feedback can select one lasing state or induce bistable switchings between different steady-states depending on the feedback strength and the injection current.

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“…1 of Ref. [21]. However introducing an asymmetry between the electron and the hole dynamics as described by Viktorov et al [12] allows to reproduce this behavior.…”

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mode Competition Induced by Optical Feedback in Two-Color Quantum Dot Lasers

Virte

Panajotov

Sciamanna

2013

IEEE J. Quantum Electron.

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“…3(f)) is obtained. These two changes easily satisfy (5) and therefore reduce GS round trip cavity losses; this effect becomes stronger at larger current since ES power becomes larger. Therefore, when the current is sufficiently high, GS lasing turns on.…”

Section: A Lasing Regime Discussionmentioning

confidence: 97%

Simulation and Analysis of Dynamic Regimes Involving Ground and Excited State Transitions in Quantum Dot Passively Mode-Locked Lasers

Rossetti

Bardella

et al. 2012

IEEE J. Quantum Electron.

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We present a modified version of the multisection delayed differential equation model, for quantum dot passively mode-locked (ML) lasers when competition between ground state (GS) and excited state (ES) ML takes place. The model takes into account the difference in the group velocity of GS and ES fields. Sole GS, sole ES, and dual-state lasing and ML have been studied. The results are verified with time domain traveling wave simulations and compared, when possible, with experimental results. These tests confirmed the reliability of the model. We found that, in two-section ML lasers, GS lasing and mode locking are always more easily established. For instance, GS lasing can be either self-starting or induced by the initial lasing from the higher energy ES. On the contrary, GS lasing tends to inhibit, to a certain extent, the onset of ES lasing, especially at low injection current and low reverse voltage. Moreover, ES shows less potential to achieve stable ML than GS. Based on these findings, we propose proper theoretical explanation of the achieved lasing and ML regimes in realized devices. Especially, we demonstrate a novel stable dual-state ML regime with remarkable enhanced pulse peak power and pulse width.

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“…7 Abusaa et al 8 introduced a rate equation model which reproduces this behaviour and also shows that the intradot timescales strongly affect relaxation times in such lasers. Olejniczak et al 9 performed a theoretical study of optical injection in QD lasers lasing simultaneously from the GS and the ES, showing some interesting features including generation of picosecond pulses.…”

Section: Introductionmentioning

confidence: 99%

All-optical switching with a dual state quantum dot laser

Tykalewicz

Goulding

Hegarty³

et al. 2014

SPIE Proceedings

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The behaviour of a dual state quantum dot laser undergoing optical injection is analysed. Depending on the injection current the free-running operation of the slave can be ground state only emission, both ground state and excited state emission or excited state emission only. Complete suppression of the excited state in the dual state lasing regime via sufficiently strong optical injection of the ground state is presented. Injection induced switching between two longitudinal modes of the ground state is also presented in the ground state only regime.

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Intrinsic gain switching in optically injected quantum dot laser lasing simultaneously from the ground and excited state

Cited by 20 publications

References 17 publications

Mode Competition Induced by Optical Feedback in Two-Color Quantum Dot Lasers

Mode Competition Induced by Optical Feedback in Two-Color Quantum Dot Lasers

Simulation and Analysis of Dynamic Regimes Involving Ground and Excited State Transitions in Quantum Dot Passively Mode-Locked Lasers

All-optical switching with a dual state quantum dot laser

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