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Dynamic spectro-polarimeter based on a modified Michelson interferometric scheme.

Vamara Dembele, Moonseob Jin, Byung-Joon Baek

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    A novel dynamic spectro-polarimeter captures the spectral Stokes vector of anisotropic objects. This snapshot instrument achieves high accuracy at over 20 frames per second, advancing optical metrology.

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    Area of Science:

    • Optics and Photonics
    • Optical Metrology
    • Spectro-polarimetry

    Background:

    • Traditional spectro-polarimetry often requires sequential measurements, limiting speed.
    • Characterizing anisotropic materials demands precise spectral and polarization information.

    Purpose of the Study:

    • To develop a dynamic spectro-polarimeter for snapshot spectral Stokes vector measurement.
    • To enable high-speed, accurate analysis of transmissive anisotropic objects.

    Main Methods:

    • A modified Michelson interferometric scheme was employed.
    • Theoretical derivations for spectral Stokes vector extraction were performed.
    • Experimental validation of the snapshot spectro-polarimeter was conducted.

    Main Results:

    • The proposed system successfully extracts the spectral Stokes vector.
    • High accuracy in measurements was demonstrated.
    • A frame rate exceeding 20Hz was achieved for dynamic measurements.

    Conclusions:

    • The developed dynamic spectro-polarimeter is a feasible and effective tool.
    • It offers a significant advancement for high-speed spectro-polarimetric analysis.
    • The system provides accurate spectral Stokes vector data for anisotropic objects.