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

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Published on: January 28, 2019

Simple algorithm for large-grid phase reconstruction of lateral-shearing interferometry.

X Tian, M Itoh, T Yatagai

|November 10, 2010

Summary

This summary is machine-generated.

A new zonal approach estimates phase distribution on large grids using precise phase differences measured by a lateral-shearing interferometer. This method offers an efficient O(N(2)) algorithm for phase reconstruction, validated by simulations and experiments.

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Last Updated: Jun 6, 2026

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Published on: January 28, 2019

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Area of Science:

Optics and Photonics
Computational Imaging
Metrology

Background:

Accurate phase distribution estimation is crucial for various optical applications.
Large-scale phase measurements often present computational challenges.

Purpose of the Study:

To introduce a simple and efficient zonal algorithm for estimating phase distribution on large grids.
To reduce the computational complexity of phase reconstruction.

Main Methods:

Utilizing a lateral-shearing interferometer to measure phase differences in orthogonal directions.
Implementing a zonal approach for phase estimation.
Developing an algorithm with O(N(2)) computational complexity for an N x N grid.

Main Results:

Demonstrated the effectiveness of the proposed zonal algorithm through computer simulations.
Validated the algorithm's performance with experimental results.
Achieved efficient phase distribution estimation on large grids.

Conclusions:

The proposed zonal approach provides an effective and computationally efficient method for phase distribution estimation.
The algorithm is suitable for large grids, overcoming previous computational limitations.
The technique shows promise for practical applications in optical metrology and imaging.