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Related Experiment Video

Updated: Jun 19, 2026

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
09:10

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

Asymmetric alignment-stabilized external-cavity semiconductor laser.

L M Codá, J P von der Weid, E Conforti

    Optics Letters
    |October 3, 2009
    PubMed
    Summary
    This summary is machine-generated.

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    We developed a new asymmetric cavity for semiconductor lasers. This design offers 16x better alignment stability than traditional lasers while maintaining a similar tuning range.

    Area of Science:

    • Optics and Photonics
    • Semiconductor Lasers
    • Laser Engineering

    Background:

    • External cavity semiconductor lasers (ECSLs) are crucial for tunable laser applications.
    • Conventional symmetric cavities in ECSLs are sensitive to grating misalignment, limiting stability and performance.
    • Improving alignment tolerance is key to enhancing the practicality and robustness of tunable laser systems.

    Purpose of the Study:

    • To demonstrate an alignment-stabilized asymmetric cavity configuration for grating-tuned ECSLs.
    • To compare the angular misalignment tolerance of the asymmetric cavity with conventional symmetric cavities.
    • To evaluate the tuning range of the proposed asymmetric cavity design.

    Main Methods:

    • Fabrication and characterization of a grating-tuned external cavity semiconductor laser utilizing an asymmetric cavity.

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    Last Updated: Jun 19, 2026

    Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
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    Published on: April 24, 2014

    Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
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  • Systematic investigation of the laser's performance under varying degrees of grating angular misalignment.
  • Measurement and comparison of the tuning range achievable with the asymmetric cavity versus a symmetric cavity configuration.

    • Main Results:

    • The asymmetric cavity configuration demonstrated a 16-fold increase in angular misalignment tolerance compared to symmetric cavities.
    • The proposed laser design maintained a comparable tuning range of approximately 30 nm, similar to conventional designs.
    • The alignment stabilization was achieved without significant compromise to the laser's spectral properties or tuning capability.

    Conclusions:

    • The demonstrated alignment-stabilized asymmetric cavity is a significant advancement for grating-tuned external cavity semiconductor lasers.
    • This configuration offers enhanced robustness against misalignment, making it more suitable for practical applications.
    • The results indicate a promising pathway for developing more stable and reliable tunable semiconductor laser sources.