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Updated: Jan 8, 2026

Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques

Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques

Published on: March 12, 2019

Using a plenoptic sensor to reconstruct vortex phase structures.

Chensheng Wu, Jonathan Ko, Christopher C Davis

|July 16, 2016

Summary

This summary is machine-generated.

This study introduces a plenoptic sensor to effectively detect and reconstruct vortex phase structures in laser beams, overcoming intensity nulls caused by random media propagation. The method enables clear visualization of beam phase distortions.

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Last Updated: Jan 8, 2026

Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques

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Published on: March 12, 2019

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

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Area of Science:

Optics and Photonics
Laser Beam Propagation
Phase Singularities

Background:

Vortex phase structures in laser beams are crucial for applications but difficult to reconstruct due to intensity nulls caused by random media.
Recognizing and reconstructing these vortex phase structures around singular points is a common challenge.

Purpose of the Study:

To develop a method for effective detection and reconstruction of vortex phase structures in laser beams.
To overcome the challenge of intensity nulls obscuring vortex phase information.

Main Methods:

Utilized a plenoptic sensor to transform the light field of a vortex beam.
Applied a simple and direct reconstruction algorithm to the transformed light field.

Main Results:

Successfully revealed the vortex phase structure by transforming the light field.
Demonstrated the effectiveness of the plenoptic sensor in detecting branch points.
Showcased the ability to reconstruct phase distortion in a beam broadly.

Conclusions:

Plenoptic sensors offer an effective solution for visualizing and reconstructing vortex phase structures.
This technique enhances the ability to analyze laser beam propagation through random media.