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Related Concept Videos

Self-Locking Screw01:16

Self-Locking Screw

A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.

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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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Injection locking of a 13-W cw Nd:YAG ring laser.

C D Nabors, A D Farinas, T Day

    Optics Letters
    |September 18, 2009
    PubMed
    Summary

    A 13-watt continuous-wave (cw) Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) ring laser was successfully injection locked by a diode laser-pumped Nd:YAG master oscillator. An all-optical method confirmed the phase fidelity between the master and slave lasers.

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    Area of Science:

    • Laser Physics
    • Quantum Optics
    • Materials Science

    Background:

    • High-power, single-frequency lasers are crucial for various scientific applications.
    • Nd:YAG lasers are widely used due to their robust performance and specific wavelengths.
    • Injection locking is a technique to improve laser properties like frequency stability and output power.

    Purpose of the Study:

    • To demonstrate the injection locking of a high-power lamp-pumped Nd:YAG ring laser.
    • To utilize a stable, single-frequency diode laser-pumped Nd:YAG laser as a master oscillator.
    • To evaluate the phase fidelity of the injection-locked system using an all-optical method.

    Main Methods:

    • Utilized a 40-mW single-frequency diode laser-pumped Nd:YAG laser as the master oscillator.
    • Employed injection locking to synchronize a 13-W cw lamp-pumped Nd:YAG ring laser (slave).
    • Implemented an all-optical technique to measure the phase relationship between the master and slave lasers.

    Main Results:

    • Achieved successful injection locking of the 13-W cw Nd:YAG ring laser.
    • Demonstrated the transfer of frequency and phase stability from the master to the slave laser.
    • Quantified the phase fidelity of the slave laser relative to the master oscillator.

    Conclusions:

    • Injection locking is an effective method for enhancing the performance of high-power Nd:YAG lasers.
    • The all-optical measurement technique provides a reliable way to assess phase fidelity in laser systems.
    • This work contributes to the development of stable, high-power laser sources for advanced applications.