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Single-frequency microchip Nd lasers.

J J Zayhowski, A Mooradian

    Optics Letters
    |September 15, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed cost-effective, single-frequency, neodymium-doped (Nd-doped) solid-state lasers. These microchip lasers offer reduced complexity for fabricating small lasers and electro-optic devices.

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    Last Updated: Jun 20, 2026

    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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    Published on: November 22, 2019

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Solid-state lasers are crucial for various scientific and industrial applications.
    • Developing compact, efficient, and cost-effective laser sources remains a key challenge.

    Purpose of the Study:

    • To demonstrate the fabrication of optically pumped, single-frequency, Nd-doped solid-state microchip lasers.
    • To evaluate the performance characteristics of these novel laser devices.

    Main Methods:

    • Construction of microchip lasers using flat-flat cavities diced from dielectrically coated crystal wafers.
    • Optical pumping of neodymium-doped yttrium aluminum garnet (Nd:YAG) lasers.
    • Characterization of laser performance including threshold, slope efficiency, and linewidth using heterodyne measurements.

    Main Results:

    • A Nd:YAG microchip laser operated at room temperature in a single longitudinal mode.
    • Threshold power was less than 1 mW, with operation extending to over 40 times the threshold.
    • Slope efficiency exceeded 30%, and heterodyne measurements indicated an instrument-limited linewidth of 5 kHz.

    Conclusions:

    • The developed microchip laser technology significantly reduces the cost and complexity of fabricating small lasers.
    • These lasers are suitable for applications requiring compact, single-frequency solid-state sources.
    • The fabrication method is adaptable to various crystal materials for diverse laser applications.