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Burst synchronization in two thin-slice solid-state lasers incoherently coupled face to face.

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    This summary is machine-generated.

    Coupled lasers with nonorthogonal polarization exhibit unstable transverse modes and chaotic oscillations. Numerical simulations confirm these findings, offering insights into laser dynamics.

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    Area of Science:

    • Laser Physics
    • Nonlinear Dynamics
    • Optics

    Background:

    • Studied laser-diode-pumped nonidentical thin-slice solid-state lasers.
    • Investigated face-to-face coupling with orthogonally polarized emissions.

    Purpose of the Study:

    • Analyze the dynamic behavior of coupled lasers.
    • Understand the impact of incoherent mutual optical coupling on laser stability.
    • Investigate the onset of chaotic relaxation oscillations.

    Main Methods:

    • Experimental setup involving coupled thin-slice solid-state lasers.
    • Introduction of incoherent mutual optical coupling.
    • Observation of transverse-mode patterns and oscillations.
    • Numerical simulation using a model equation.

    Main Results:

    • Incoherent coupling induced slow fluctuations in transverse-mode patterns, unlike stable patterns in isolated lasers.
    • Nonorthogonal multi-transverse-mode operation in one laser led to simultaneous chaotic relaxation oscillations in both coupled lasers.
    • Observed instabilities were accurately reproduced by numerical simulations.

    Conclusions:

    • Coupling nonidentical lasers with specific polarization can lead to complex dynamic behaviors, including chaotic oscillations.
    • Interference-induced modulation at swept beat frequencies offers a physical explanation for the observed chaotic dynamics.
    • Numerical models are effective in predicting and understanding these laser instabilities.