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Diode-pumped continuous-wave Nd:glass laser.

W J Kozlovsky, T Y Fan, R L Byer

    Optics Letters
    |September 10, 2009
    PubMed
    Summary
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    Diode-laser pumping achieved efficient operation of neodymium-doped glass (Nd:glass) laser oscillators. This method demonstrated a low threshold and high slope efficiency for compact laser applications.

    Area of Science:

    • Optics and Photonics
    • Laser Physics
    • Materials Science

    Background:

    • Neodymium-doped glass (Nd:glass) lasers are crucial for various applications.
    • Efficient pumping methods are essential for developing compact and high-performance laser systems.
    • Diode-laser technology offers a promising avenue for pumping solid-state lasers.

    Purpose of the Study:

    • To investigate the feasibility and performance of diode-laser end-pumping for monolithic Nd:glass laser oscillators.
    • To characterize the threshold, slope efficiency, and output power of such a laser system.

    Main Methods:

    • Utilized a single-stripe diode laser for end-pumping a monolithic Nd:glass laser oscillator.
    • Employed a 2-mm-long oscillator with a mode radius of 35 micrometers.

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  • Measured the threshold power, slope efficiency, and output power.

    • Main Results:

    • Achieved a low threshold power of 2.2 mW.
    • Observed a high slope efficiency of 42%.
    • Generated 2.5 mW of single-ended output power in multiple axial modes (>20).

    Conclusions:

    • Diode-laser end-pumping is an effective method for Nd:glass laser oscillators.
    • The demonstrated performance highlights the potential for compact and efficient laser sources.
    • Further optimization could lead to single-mode operation for specialized applications.