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Self-calibration for Mueller polarimeters based on DoFP polarization imagers
Optics Letters
|March 15, 2022
Summary
Mueller polarimeters using division of focal plane sensors can be self-calibrated. This method requires only six images and no external polarizing elements, improving Mueller polarimetry effectiveness.
Area of Science:
- Optical Engineering
- Polarimetry
- Image Sensors
Background:
- Mueller polarimeters (MPs) are crucial for characterizing polarization properties of light.
- Division of focal plane (DoFP) polarization imagers enable faster MP measurements.
- Current calibration methods often require external polarizing elements, adding complexity and cost.
Purpose of the Study:
- To demonstrate a novel self-calibration method for DoFP sensor-based Mueller polarimeters.
- To show that calibration can be achieved without any additional polarizing reference elements.
- To establish the accuracy limitations of the proposed self-calibration technique.
Main Methods:
- Utilized a DoFP sensor-based Mueller polarimeter.
- Developed a self-calibration procedure requiring only six image acquisitions.
- Analyzed the theoretical accuracy limits based on system noise.
Main Results:
- Successfully demonstrated self-calibration of DoFP MPs.
- The proposed method eliminates the need for external polarizing reference elements.
- Calibration accuracy is primarily limited by sensor noise levels.
Conclusions:
- DoFP sensor-based Mueller polarimeters possess a unique property enabling self-calibration.
- This self-calibration method simplifies the MP setup and enhances measurement efficiency.
- The technique offers high accuracy, constrained only by inherent system noise.
