Analysis of Coherence-Collapse Regime of Semiconductor Lasers Under External Optical Feedback by Perturbation Method

Zou, Qin; Azouigui, S.

doi:10.5772/37074

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…On the other hand, the same system could operate in pulsing regime at moderate feedback levels. These statements are found in good agreement with the results obtained in an early work [17], where it was shown that at the onset of CC, the critical feedback level (in terms of the external-mirror reflection coefficient)…”

Section: Shift and Entrance Of The Coherence-collapse Regionsupporting

confidence: 92%

“…In this approach, a laser operating in the WFB regime is regarded as a weakly-perturbed nonlinear dynamic system and the threshold of instability corresponds to the first Hopf bifurcation of the LK rate equations. An attempt has been made at interpreting experimental findings obtained with InAs/InP quantum-dash Fabry-Perot lasers by means of this approach, such as the onset of CC and the transition from the LFFs to SFB regimes [17].…”

Section: David Publishingmentioning

confidence: 99%

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Cavity-Mode Properties of Semiconductor Lasers Operating in Strong-Feedback Regime

Zou¹,

Brezini²

2015

JPSA

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This paper investigates the modal properties of semiconductor lasers operating in the strong-feedback regime. Analytical expressions are developed based on an iterative travelling-wave model, which enable a complete and quantitative description of a compound cavity mode in its steady state. Additional information is provided about the physical inside into a compound laser system, such as a bifurcation diagram of the compound cavity modes for full variation range (from 0 to 1) of the external reflection coefficient and a more general shape for the diagram of photon density versus mode phase-this latter will reduce to the classical "ellipse" in the weak-feedback regime. It is shown that in the strong-feedback regime, a feedback laser is characterized by a small mode number and a high density of photons. This behavior confirms previous experimental observations, showing that beyond the coherence-collapse regime, the compound laser system could be re-stabilized, and that as a result power-enhanced low-noise stable laser operation with quasi-uniform pulsation is possible with external-mirror reflectivity close to 1. Moreover, it is also shown that for a compound system operating in the strong-feedback regime, an anti-reflection treatment of a laser can significantly reduce its current threshold, and that in the absence of this treatment excitation of a minimum-linewidth mode with higher output power would be possible inside such a system. Finally, it is shown that in the weak-feedback regime except for a phase shift the iterative travelling-wave model will reduce to the Lang-Kobayashi model in cases where the product of the feedback rate and the internal round-trip time is much less than unity (that would mean in situations of as-cleaved lasers).

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Section: Shift and Entrance Of The Coherence-collapse Regionsupporting

confidence: 92%

Section: David Publishingmentioning

confidence: 99%

Cavity-Mode Properties of Semiconductor Lasers Operating in Strong-Feedback Regime

Zou¹,

Brezini²

2015

JPSA

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“…In this approach, a laser with weak optical feedback is regarded as a weaklyperturbed nonlinear dynamic system and the threshold of instability corresponds to the first Hopf bifurcation of the LK rate equations. An attempt has been made at interpreting experimental findings of InAs/InP quantum-dash Fabry-Perot lasers by using this approach, such as the onset of CC and the transition from the regime of LFFs to the regime of so-termed fully-developed coherence collapse (FDCC) [9].…”

Section: Introductionmentioning

confidence: 99%

Steady-State Behavior of Semiconductor Laser Diodes Subject to Arbitrary Levels of External Optical Feedback

Zou¹

2013

OPJ

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This paper investigates the steady-state behavior of a semiconductor laser subject to arbitrary levels of external optical feedback by means of an iterative travelling-wave (ITW) model. Analytical expressions are developed based on an iterative equation. We show that, as in good agreement with previous work, in the weak-feedback regime of operation except for a phase shift the ITW model will be simplified to the Lang-Kobayashi (LK) model, and that in the case where this phase shift is equal to zero the ITW model is identical to the LK model. The present work is of use in particular for distinguishing the coherence-collapse regime from the strong-feedback regime where low-intensity-noise and narrow-linewidth laser operation would be possible at high feedback levels with re-stabilization of the compound laser system.

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Semiconductor quantum dot lasers: Genesis, prospects, and challenges

Grillot,

Duan,

Dong

et al. 2024

Quantum Photonics

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Analysis of Coherence-Collapse Regime of Semiconductor Lasers Under External Optical Feedback by Perturbation Method

Cited by 3 publications

References 19 publications

Cavity-Mode Properties of Semiconductor Lasers Operating in Strong-Feedback Regime

Cavity-Mode Properties of Semiconductor Lasers Operating in Strong-Feedback Regime

Steady-State Behavior of Semiconductor Laser Diodes Subject to Arbitrary Levels of External Optical Feedback

Semiconductor quantum dot lasers: Genesis, prospects, and challenges

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