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Calibration of misalignment errors in composite waveplates using Mueller matrix ellipsometry.

Honggang Gu, Shiyuan Liu, Xiuguo Chen

|May 14, 2015

Summary

This summary is machine-generated.

Accurate calibration of composite waveplates is crucial for optical instruments. This study introduces a new analytical model and inverse approach to precisely determine misalignment errors using characteristic parameters, validated by experiments.

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Area of Science:

Optics and Photonics
Optical Metrology
Materials Science

Background:

Composite waveplates are essential components in advanced optical instruments like ellipsometers and polarimeters.
Misalignment errors in these waveplates can introduce significant artifacts into spectral data, compromising measurement accuracy.
Accurate calibration is vital for reliable performance in applications such as cryptography and photoelasticity.

Purpose of the Study:

To develop a precise method for calibrating misalignment errors in composite waveplates.
To establish a general analytical model linking misalignment errors to measurable characteristic parameters.
To propose an efficient inverse approach for error correction.

Main Methods:

Derivation of a general analytical model for composite waveplate misalignment.
Proposal of an inverse calibration approach based on characteristic parameters (fast axis azimuth and rotary angle).
Experimental validation using dual rotating-compensator Mueller matrix ellipsometry.

Main Results:

Successful demonstration of the analytical model's accuracy in describing misalignment effects.
Experimental validation of the proposed inverse approach using a MgF(2)-MgF(2)-quartz triplate.
Confirmation of the approach's correctness and efficiency through numerical simulations and experiments.

Conclusions:

The developed analytical model and inverse approach provide an effective means for calibrating composite waveplate misalignment.
The experimental setup based on Mueller matrix ellipsometry is suitable for measuring the required characteristic parameters.
The methodology is expected to be extendable to more complex composite waveplate systems.