Fine tuning method for optimization of liquid crystal based polarimeters

Area of Science:

• Optical Engineering
• Polarimetry
• Liquid Crystal Devices

Background:

• Liquid crystal variable retarders (LCVRs) are used in polarimeters for temporal polarization modulation.
• Manufacturing tolerances and system configurations can lead to deviations from ideal setups, reducing polarimetric efficiency and signal-to-noise ratio.
• Existing voltage sequences may not achieve optimal polarimetric efficiencies due to these imperfections.

Purpose of the Study:

• To develop and demonstrate a systematic fine-tuning method for LCVR driving voltages.
• To enhance the polarimetric modulation efficiency and signal-to-noise ratio of LCVR-based polarimeters.
• To address the impact of real-world imperfections on polarimetric performance.

Main Methods:

• A systematic fine-tuning procedure for LCVR driving voltages was developed.
• The method was experimentally demonstrated and validated.
• The focus was on optimizing voltage sequences to compensate for deviations from ideal conditions.

Main Results:

• The fine-tuning method was successfully demonstrated.
• The proposed method addresses deviations caused by manufacturing tolerances and system configurations.
• The optimization aims to achieve higher polarimetric efficiencies than standard calibration methods.

Conclusions:

• A practical method for fine-tuning LCVR driving voltages has been established.
• This technique can improve the performance of LCVR-based polarimeters in real-world applications.
• The study provides a pathway to overcome limitations and achieve optimal polarimetric measurements.