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Related Experiment Video

Updated: May 11, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

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Published on: August 12, 2013

Electro-optic coefficients measurement based on a multiple-reflection Mach-Zehnder interferometer.

Weigang Zhao, Wenting Diao, Fusheng Qiu

|March 17, 2026

Summary

This summary is machine-generated.

Multiple reflections in optical crystals cause errors in electro-optic coefficient (EOC) measurements. A new Mach-Zehnder interferometer method suppresses these effects by selecting specific angles, ensuring accurate EOC determination.

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Area of Science:

Optical Physics
Materials Science
Metrology

Background:

Multiple-reflection (MR) effects in optical crystals introduce significant errors in electro-optic coefficient (EOC) measurements.
Accurate EOC determination is crucial for applications in optical modulation and switching.

Purpose of the Study:

To develop and validate a novel method for suppressing MR effects in EOC measurements.
To achieve high-precision EOC characterization with reduced experimental error.

Main Methods:

Implementation of a Mach-Zehnder interferometer incorporating MR modeling.
Selection of specific incidence angles (Θ=2mπ and Θ=(2m+1)π) to minimize MR influence.
Numerical simulations using congruent lithium niobate and experimental validation with a He-Ne laser.

Main Results:

Numerical simulations predict EOC errors below 2.5% for angular deviations under 0.1°.
Experimental results demonstrate variance below 1% for γ13 and γ33 measurements.
The method enables frequency-resolved EOC characterization.

Conclusions:

The presented Mach-Zehnder interferometer method effectively suppresses MR effects in EOC measurements.
This approach offers a simple and high-precision solution for optical metrology.
Validated theoretical predictions and experimental results confirm the method's efficacy.