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Coaxial Mirau interferometer.

Adrian Dobroiu, Hiroshi Sakai, Hitoshi Ootaki

    Optics Letters
    |November 21, 2007
    PubMed
    Summary
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    This study introduces a compact optical coherence tomography device using a Mirau interferometer and a superluminescent diode

    Area of Science:

    • Optics and Photonics
    • Biomedical Imaging
    • Interferometry

    Background:

    • Optical Coherence Tomography (OCT) is a valuable non-invasive imaging technique.
    • Traditional OCT systems can be bulky and complex.
    • Miniaturization is crucial for broader OCT applications.

    Purpose of the Study:

    • To present a novel, miniaturized interferometric configuration for OCT.
    • To leverage a Mirau interferometer and integrated photodetector for device simplification.
    • To explore the advantages of a coaxial and confocal OCT design.

    Main Methods:

    • Development of a new OCT configuration based on the Mirau interferometer.
    • Integration of a photodetector within a superluminescent diode package.
    • Characterization of fundamental performance metrics like resolution and dynamic range.

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    Main Results:

    • Achieved a highly miniaturized OCT device.
    • Demonstrated a coaxial structure enabling confocal microscopy.
    • Presented successful measurement results on a rough metallic surface.

    Conclusions:

    • The proposed Mirau interferometer-based OCT configuration offers significant miniaturization.
    • The design provides advantages including confocal operation and full working distance utilization.
    • This approach is suitable for advanced optical coherence tomography applications.