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A Phase Recovery Technique Using the Genetic Algorithm for Aberration Correction in a Coherent Imaging System.

Yu Zhang^1,2, Hongwen Zhang¹, Guoqin Yuan¹

¹Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130000, China.

Sensors (Basel, Switzerland)

|September 28, 2023

Summary

This summary is machine-generated.

This study presents a novel method for correcting aberrations in coherent imaging systems. The technique enhances image quality and sharpness without altering the optical path, enabling system miniaturization.

Keywords:

coherent imaging computational imaging image quality phase recovery

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Area of Science:

Optics
Image Processing
Optical Engineering

Background:

Traditional imaging systems face a trade-off between high imaging quality and miniaturization.
Aberrations in coherent imaging systems degrade image quality and limit miniaturization potential.

Purpose of the Study:

To propose and validate a method for correcting aberrations in coherent imaging optical systems.
To improve imaging quality and enable system miniaturization without modifying the existing optical path.

Main Methods:

A phase recovery approach is used to identify aberrations at the exit pupil.
Conjugate filters are designed in the frequency domain for aberration correction.
An improved genetic algorithm with a disaster model is employed for accurate aberration solving, mitigating premature convergence.

Main Results:

The proposed method successfully corrects aberrations in a simulated paraxial imaging optical path.
Experimental verification demonstrates improved image sharpness and richer edge information after aberration correction.
The technique enhances coherent imaging system performance while maintaining system simplicity.

Conclusions:

The developed aberration correction method is feasible and effective for improving coherent imaging systems.
This approach offers a viable solution for achieving high imaging quality in miniaturized optical systems.
The study validates the potential of frequency domain correction and advanced genetic algorithms in optical system enhancement.