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Continuous-wave long-distributed-cavity laser using cat-eye retroreflectors.

Quan Sheng, Meng Wang, Hanchao Ma

    Optics Express
    |November 23, 2021
    PubMed
    Summary
    This summary is machine-generated.

    This study presents an efficient long-distributed-cavity laser using a cat-eye retroreflector for alignment. The laser achieves stable, high output power over a long working distance without parameter adjustments.

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    Area of Science:

    • Optics and Photonics
    • Laser Physics

    Background:

    • Long-working-distance lasers are crucial for applications requiring remote operation.
    • Cavity alignment and optical aberrations are significant challenges in laser design.

    Purpose of the Study:

    • To develop an efficient, stable long-distributed-cavity laser system.
    • To address challenges of cavity alignment and spherical aberration in long working distance lasers.

    Main Methods:

    • Utilized a cat-eye retroreflector configuration for enhanced cavity alignment.
    • Optimized cavity parameters for the small stability region associated with long working distances.
    • Employed an aspheric lens to correct intracavity spherical aberration.

    Main Results:

    • Achieved 5.91 W continuous-wave output power from an end-pumped Nd:YVO4 laser.
    • Demonstrated stable operation at a long working distance of 5 meters.
    • Maintained output power fluctuation below 10% across a 1-5 meter working distance range without re-optimization.

    Conclusions:

    • The cat-eye retroreflector design facilitates efficient cavity alignment for long working distance lasers.
    • Spherical aberration correction is vital for maintaining laser efficiency in compact, long-working-distance systems.
    • The developed laser offers stable and efficient performance suitable for various remote sensing and measurement applications.