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Related Experiment Video

Updated: Jun 21, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Astigmatic phase retrieval: an experimental demonstration.

Clare A Henderson¹, Garth J Williams, Andrew G Peele

¹ARC Centre of Excellence for Coherent X-ray Science, School of Physics, The University of Melbourne, Parkville3010, Australia. c.henderson@physics.unimelb.edu.au

|July 8, 2009

Summary

This summary is machine-generated.

This study experimentally demonstrates astigmatic phase retrieval, a new technique for reconstructing wavefields. The method successfully reconstructed various optical patterns, including vortices and test images.

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Last Updated: Jun 21, 2026

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Area of Science:

Optics and Photonics
Wavefront Sensing and Aberration Analysis

Background:

Phase retrieval is crucial for reconstructing wavefields in optics.
Traditional methods face limitations with complex wavefields.

Purpose of the Study:

To experimentally demonstrate the novel astigmatic phase retrieval technique.
To validate its capability in reconstructing distorted wavefields.

Main Methods:

Introducing controlled astigmatism (cylindrical curvature) in orthogonal directions to the diffracted wavefield.
Applying the astigmatic phase retrieval algorithm for reconstruction.

Main Results:

Successful experimental demonstration of astigmatic phase retrieval.
Accurate reconstruction of a charge-one vortex.
Accurate reconstruction of a charge-two vortex.
Accurate reconstruction of a simple test image.

Conclusions:

Astigmatic phase retrieval is a viable technique for wavefield reconstruction.
The method shows robustness in reconstructing complex optical structures.