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Updated: Jun 14, 2026

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Optically injected quantum-dot lasers.

T Erneux1, E A Viktorov, B Kelleher

  • 1Université Libre de Bruxelles, Optique Nonlinéaire Théorique, Campus Plaine, Code Postal 231, 1050 Bruxelles, Belgium.

Optics Letters
|April 6, 2010
PubMed
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This study investigates optically injected quantum-dot lasers, revealing Class A laser behaviors like bistability and absent instabilities. These findings are explained by Hopf and saddle-node locking boundaries.

Area of Science:

  • Optoelectronics
  • Quantum Optics
  • Semiconductor Physics

Background:

  • Quantum-dot semiconductor lasers (SLs) exhibit unique optical properties.
  • Understanding their dynamic response under optical injection is crucial for device applications.
  • Conventional semiconductor lasers are often classified as Class B.

Purpose of the Study:

  • To investigate the dynamic response of optically injected quantum-dot semiconductor lasers.
  • To characterize the locking boundaries and stability of these lasers.
  • To compare the behavior of quantum-dot lasers with conventional semiconductor lasers.

Main Methods:

  • Experimental observation of laser dynamics under optical injection.
  • Theoretical analysis using rate equations specific to quantum-dot lasers.

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Related Experiment Videos

Last Updated: Jun 14, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
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Published on: October 13, 2017

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode
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  • Analytical determination of the stability diagram based on injection parameters.

    • Main Results:

    • Observed absence of instabilities typically associated with relaxation oscillations.
    • Identified a region of bistability between two distinct locked states.
    • Demonstrated that quantum-dot lasers exhibit features more akin to Class A lasers.

    Conclusions:

    • The unique response of quantum-dot lasers is attributed to specific locking boundary types (Hopf and saddle-node).
    • These findings challenge conventional Class B classifications for semiconductor lasers.
    • The study provides a theoretical framework to explain observed experimental phenomena in quantum-dot lasers.