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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

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Compressive propagation with coherence.

Ryoichi Horisaki, Takuro Aoki, Yohei Nishizaki

|February 1, 2022

Summary

This summary is machine-generated.

We developed new wave propagation models for partially coherent light to reduce computational costs in optical inverse problems. These models significantly speed up essential optical sensing and control techniques like computer-generated holography.

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Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements

Published on: June 25, 2021

Area of Science:

Optics and Photonics
Computational Imaging

Background:

Inverse problems in optics often require computationally intensive wave propagations.
Spatially partially coherent light is common in optical systems but challenging to model efficiently.

Purpose of the Study:

To present novel wave propagation models for spatially partially coherent light.
To reduce the computational load in optical inverse problems.

Main Methods:

Approximating partially coherent light as random or plane wavefronts.
Utilizing spatial bandpass filters representing an illumination pupil.
Coherent propagation of individual waves to a sensor plane.

Main Results:

Demonstrated significant reduction in the number of coherent propagations needed.
Validated the models through numerical simulations and experimental computer-generated holography.
Successfully incorporated spatially partially coherent light into inverse problem solving.

Conclusions:

The proposed models offer an efficient approach for handling partially coherent light in optical inverse problems.
These models are applicable to critical optical control and sensing applications, including computer-generated holography and quantitative phase imaging.