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Fast generation of perfect vortex and vector beams through highly scattering media via discrete convolution-based

Yepeng Sun, Mingchao Zhu, Wei Miao

|August 13, 2025

Summary

This summary is machine-generated.

This study introduces a novel method for focusing light through scattering media using discrete convolution-based vector point-spread-function engineering. The technique enables rapid focusing of perfect vortex beams (PVBs) and perfect vector vortex beams (PVVBs) with enhanced control over polarization and peak-to-background ratio.

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Area of Science:

Optics and Photonics
Wavefront Engineering
Scattering Media Imaging

Background:

Focusing and imaging through highly scattering media (HSM) remains a significant challenge in optics.
Wavefront shaping offers potential solutions for overcoming scattering limitations.

Purpose of the Study:

To develop a rapid method for focusing perfect vortex beams (PVBs) and perfect vector vortex beams (PVVBs) through HSM.
To enhance control over the polarization states and peak-to-background ratio (PBR) of focused light.
To demonstrate the application of discrete convolution-based vector point-spread-function (DC-VPSF) engineering for wavefront control.

Main Methods:

Utilizing a vector transmission matrix (VTM)-based operator derived from discrete convolution.
Employing digital optical phase conjugation to calculate the required input field.
Experimentally generating PVBs and PVVBs through HSM with controlled parameters.

Main Results:

Successful rapid focusing of PVBs with varying topological charges through HSM.
Generation of PVBs with controllable polarization states and high PBR.
Demonstration of PVVBs with complex polarization distributions through HSM.

Conclusions:

The developed DC-VPSF engineering method offers advantages in speed and PBR improvement compared to general point-spread-function engineering.
This approach provides a generalized framework for multi-degree-of-freedom wavefront control.
The findings offer promising avenues for optical micromanipulation and imaging through scattering media.