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Locking-range analysis for three coupled lasers.

E Pampaloni, A Lapucci

    Optics Letters
    |October 16, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Stable phase-locked solutions in coupled lasers depend on coupling strength, field amplitude ratios, and phase retardation. This numerical analysis identifies the key parameters for achieving stable laser array behavior.

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    Area of Science:

    • Photonics and Laser Physics
    • Nonlinear Dynamics
    • Optical Engineering

    Background:

    • Coupled laser systems are fundamental in various photonic applications.
    • Achieving stable phase-locked states is crucial for coherent laser array operation.
    • Previous studies have explored factors influencing laser coupling, but a comprehensive analysis for three next-neighbor coupled lasers is needed.

    Purpose of the Study:

    • To numerically determine the parameter range for stable phase-locked solutions in three next-neighbor coupled lasers.
    • To investigate the influence of coupling strength, field amplitude ratios, and phase retardation on laser locking.
    • To provide insights into the design and optimization of coherent laser arrays.

    Main Methods:

    • Numerical analysis of a system of three coupled laser rate equations.
    • Systematic variation of key parameters: coupling strength, field amplitude ratios, and phase retardation.
    • Identification of the locking band boundaries for stable phase-locked states.

    Main Results:

    • The locking band for stable phase-locked solutions is significantly influenced by coupling strength.
    • Field amplitude ratios between array elements play a critical role in determining the locking range.
    • Field phase retardation in the coupling channels is a crucial, often overlooked, parameter affecting stable laser locking.

    Conclusions:

    • Stable phase-locking in three next-neighbor coupled lasers is a complex interplay of multiple parameters.
    • Accurate prediction and control of coupling strength, amplitude ratios, and phase retardation are essential for designing stable coherent laser arrays.
    • This analysis provides a quantitative framework for understanding and achieving stable operation in multi-laser systems.