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Related Experiment Video

Updated: Mar 30, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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Parallel-quadrature on-axis phase-shifting common-path interferometer using a polarizing beam splitter.

Hongyi Bai, Mingguang Shan, Zhi Zhong

    Applied Optics
    |November 13, 2015
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel common-path interferometer for precise quantitative phase measurement. The method enables stable and accurate phase retrieval of specimens using a modified Michelson configuration.

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    Area of Science:

    • Optics and Photonics
    • Interferometry
    • Phase Measurement

    Background:

    • Quantitative phase measurement is crucial in various scientific fields.
    • Traditional interferometry setups can be sensitive to environmental vibrations.
    • On-axis configurations simplify optical alignment and improve stability.

    Purpose of the Study:

    • To propose a common-path parallel-quadrature on-axis phase-shifting interferometry technique.
    • To achieve stable and accurate quantitative phase measurement.
    • To demonstrate the method's validity and stability through experimental validation.

    Main Methods:

    • A modified Michelson interferometer utilizing a polarizing cube beam splitter.
    • Splitting circularly polarized light into object and reference beams.
    • Simultaneous capture of two quadrature phase-shifted interferograms.
    • Phase retrieval using a two-step phase-shifting algorithm.

    Main Results:

    • Successful implementation of a common-path, on-axis interferometry system.
    • Demonstration of simultaneous quadrature phase shift acquisition.
    • Experimental validation of the proposed method's accuracy and stability.

    Conclusions:

    • The proposed common-path parallel-quadrature interferometer offers a robust solution for quantitative phase measurement.
    • The modified Michelson configuration provides enhanced stability and simplifies alignment.
    • The method is suitable for precise phase retrieval in various applications.