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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
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Published on: April 24, 2014

Degenerate optical cavities.

J A Arnaud

    Applied Optics
    |January 15, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Degenerate optical cavities, where light rays retrace their path, are analyzed. Conditions for degeneracy in ring and linear configurations are detailed, with simpler setups requiring fewer optical elements.

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    Area of Science:

    • Optics
    • Optical Engineering

    Background:

    • Optical cavities are fundamental in laser systems and interferometry.
    • Degeneracy in optical cavities, where a ray retraces its path, simplifies certain optical designs.

    Purpose of the Study:

    • To define the conditions for degeneracy in various optical cavity configurations.
    • To identify the minimum optical elements required for degenerate cavities.

    Main Methods:

    • Geometrical optics methods were employed.
    • Analysis focused on ring-type cavities with internal lenses and linear configurations.

    Main Results:

    • Conditions for degeneracy were derived for ring cavities.
    • Linear degenerate cavities can be realized with a spherical mirror/corner cube, thin lens, and plane mirror.
    • Planar ring cavities require at least three focusing elements, while nonplanar rings need only two.

    Conclusions:

    • The alignment sensitivity of degenerate cavities is comparable to that of a plane Fabry-Perot interferometer.
    • Specific configurations for achieving optical cavity degeneracy with minimal components are presented.