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    A novel snapshot spectropolarimeter and polarization radiometer were developed. This instrument accurately measures spectral and polarization properties of light, crucial for advanced optical analysis.

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    Area of Science:

    • Optics and Photonics
    • Spectroscopy
    • Polarimetry

    Background:

    • Accurate measurement of light's spectral and polarization properties is essential for various scientific and industrial applications.
    • Existing instruments may have limitations in simultaneous spectral and polarization analysis.

    Purpose of the Study:

    • To develop and validate a snapshot spectropolarimeter and polarization radiometer.
    • To enable simultaneous measurement of spectral and polarization characteristics of light.

    Main Methods:

    • Utilized the division-of-aperture principle with a 2x2 polarizer and lens array.
    • Employed four spectrometers and multimode fibers for simultaneous spectral acquisition.
    • Detailed calibration procedures for wavelength, radiometry, and polarization.

    Main Results:

    • The instrument operates from 420 to 700 nm with a spectral resolution of 3.8 nm.
    • Achieved measurement errors of 0.75° for Angle of Linear Polarization (AoLP), 2.7% for Degree of Linear Polarization (DoLP), and 3.7% for Degree of Circular Polarization (DoCP).
    • Experimental results confirmed spectral resolution and polarization accuracy with broadband and narrowband sources.

    Conclusions:

    • The developed snapshot spectropolarimeter and polarization radiometer is a validated instrument.
    • Demonstrated capability for accurate and simultaneous spectral and polarization measurements.
    • Potential applications in remote sensing, material science, and biomedical imaging.