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Folded-wave interferometer for laser-matter interaction studies.

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    A novel folded-wave interferometer enables independent control over fringe separation in two interferograms. This white-light, wide-angle instrument offers a large field of view for advanced optical applications.

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    Area of Science:

    • Optics and Photonics
    • Interferometry
    • Optical Instrumentation

    Background:

    • Michelson interferometers are fundamental in optical metrology.
    • Controlling fringe separation is crucial for analyzing interferograms.
    • Existing designs may lack independent control or wide-angle capabilities.

    Purpose of the Study:

    • To describe a novel folded-wave interferometer.
    • To enable independent adjustment of background fringe separation for two output interferograms.
    • To present a white-light, wide-angle instrument with a large field of view.

    Main Methods:

    • Design and construction of a folded-wave interferometer based on the Michelson interferometer principle.
    • Incorporation of mechanisms for independent adjustment of fringe separation.
    • Utilizing white-light illumination and wide-angle optical components.

    Main Results:

    • Successful implementation of a folded-wave interferometer.
    • Demonstration of independent adjustment of fringe separation for two output interferograms.
    • Achieved a large field of view, limited primarily by imaging optics.

    Conclusions:

    • The described folded-wave interferometer offers enhanced control over interferogram characteristics.
    • This instrument is suitable for applications requiring white-light, wide-angle interferometry with adjustable fringe separation.
    • The design provides a versatile platform for advanced optical measurements.