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Related Experiment Video

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Gene Expression Analysis of Endothelial Cells Exposed to Shear Stress Using Multiple Parallel-plate Flow Chambers

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Multiple-wave radial shearing interferometer based on a Fresnel zone plate.

Zhongyu Wang, Shuai Wang, Ping Yang

|January 18, 2019

Summary

A novel compact radial shearing interferometer uses a Fresnel zone plate to create multiple beams for wavefront measurement. This system efficiently captures continuous and transient wavefront data, validated by simulations and experiments.

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Area of Science:

Optics and Photonics
Interferometry
Wavefront Sensing

Background:

Traditional interferometers can be bulky and complex.
Measuring dynamic wavefronts requires adaptable and compact instrumentation.

Purpose of the Study:

To propose a compact multiple-wave radial shearing interferometer (MWRSI) based on a Fresnel zone plate (FZP).
To develop a method for wavefront difference retrieval from the MWRSI's interferogram.
To demonstrate the system's suitability for continuous and transient wavefront measurement.

Main Methods:

Utilizing a Fresnel zone plate (FZP) to diffract a plane beam into multiple orders (plane, converging, diverging).
Allowing diffracted beams to interfere and create radial shear in the imaging plane.
Employing a Charge-Coupled Device (CCD) for data acquisition and wavefront retrieval.

Main Results:

A single interference pattern contains multiple wavefront differences.
The MWRSI system is compact, requiring only an FZP and a CCD.
Numerical simulations and experimental results validate the proposed method.

Conclusions:

The proposed FZP-based MWRSI offers a compact and adaptable solution for wavefront measurement.
The system is effective for analyzing both continuous and transient wavefronts.
This technology has potential applications in optical testing and metrology.