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Updated: Jun 22, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
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Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

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Phase synchronization of chaotic lasers.

Dong Ik Kim, Dae-Sic Lee, Young-Jai Park

    Optics Express
    |June 9, 2009
    PubMed
    Summary
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    Researchers studied phase synchronization in coupled diode laser pumped Nd:YAG lasers. Increasing coupling strength led to phase synchronization, with unique 2pi phase jumps and a pi/2 phase shift observed.

    Area of Science:

    • Laser Physics
    • Nonlinear Dynamics
    • Chaos Theory

    Background:

    • Phase synchronization is crucial for coupled chaotic systems.
    • Understanding transitions in laser dynamics is essential for applications.

    Purpose of the Study:

    • To experimentally investigate phase synchronization in electronically coupled diode laser pumped Nd:YAG lasers.
    • To analyze the transition dynamics, including phase jumps and shifts, as coupling strength varies.

    Main Methods:

    • Experimental setup with two electronically coupled diode laser pumped Nd:YAG lasers.
    • Analysis using phase portraits, phase difference dynamics, and frequency variation.
    • Investigating the effect of coupling strength on synchronization behavior.

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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

    Published on: September 5, 2019

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    Last Updated: Jun 22, 2026

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
    14:18

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

    Published on: February 28, 2016

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
    10:52

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation

    Published on: February 4, 2017

    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
    07:56

    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

    Published on: September 5, 2019

    Main Results:

    • Observed transition from nonsynchronous to phase synchronous states via a phase jump state.
    • Identified unique 2pi phase jumps and a pi/2 phase shift, differing from optical coupling.
    • Obtained a scaling rule for average phase locking time in the intermittent phase jump state.

    Conclusions:

    • Electronically coupled Nd:YAG lasers exhibit distinct phase synchronization dynamics.
    • The pi/2 phase shift is a key characteristic of this system's transition.
    • The findings provide insights into controlling and predicting synchronization in chaotic lasers.