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    A new eigenvalue calibration method for 3×3 Mueller polarimetry simplifies tissue characterization. This technique avoids complex modeling, making it easier to implement for accurate optical property analysis.

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    Area of Science:

    • Biomedical Optics
    • Polarimetry
    • Optical Physics

    Background:

    • 3×3 Mueller polarimetry shows promise for tissue characterization.
    • Calibration remains a significant challenge for 3×3 Mueller polarimeters.
    • Existing calibration methods can be complex and require precise sample knowledge.

    Purpose of the Study:

    • To develop and demonstrate an eigenvalue calibration method for 3×3 Mueller polarimeters.
    • To investigate optimal measurement combinations for calibration.
    • To provide an easy-to-implement calibration solution for polarimetric tissue analysis.

    Main Methods:

    • An eigenvalue calibration approach inspired by full Mueller polarimeters was adapted.
    • The method was designed to not require modeling of polarization state generators or analyzers.
    • It also avoids the need for precise knowledge of calibration sample properties or orientations.

    Main Results:

    • A novel eigenvalue calibration method for 3×3 Mueller polarimeters was successfully demonstrated.
    • The optimal combination of calibration measurements was investigated.
    • Experimental validation was performed using a linear polarizer and a biological specimen.

    Conclusions:

    • The proposed eigenvalue calibration method is effective and easy to implement for 3×3 Mueller polarimetry.
    • This advancement facilitates more reliable tissue characterization using polarimetric techniques.
    • The method's independence from complex modeling enhances its practical applicability.