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Continuously tunable resonant ruby laser reflector.

M M Johnson, A H Lagrone

    Applied Optics
    |February 4, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Frequency-tunable reflectors can stabilize ruby laser spectra. A four-surface reflector design using sapphire and stellite enables continuous tuning of ruby lasers with narrow spectral width.

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    Area of Science:

    • Optics and Photonics
    • Laser Physics

    Background:

    • Multisurfaced reflectors are crucial for laser stabilization.
    • Controlling the lasing spectrum of ruby lasers requires precise reflector design.

    Purpose of the Study:

    • To describe theoretical requirements for frequency-tunable multisurfaced reflectors.
    • To investigate tunable reflectors for ruby laser spectral control.

    Main Methods:

    • Utilized Fabry-Perot ring analysis.
    • Investigated a four-surface reflector configuration with sapphire flats and a stellite spacer.

    Main Results:

    • A four-surface reflector with a stellite spacer demonstrated thermal frequency tunability.
    • Continuous tuning of a ruby laser near 6944 Å by over 0.3 Å was achieved.
    • The reflector maintained a spectral width less than +/-0.01 Å.

    Conclusions:

    • The proposed reflector design meets theoretical requirements for frequency-tunable, multisurfaced reflectors.
    • This design is effective for stabilizing and controlling the lasing spectrum of ruby lasers.
    • The stellite spacer's thermal expansion coefficient is critical for achieving thermal frequency tunability.