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Frozen spatial coherence.

M A Pinto, P A Brandão

|June 16, 2022

Summary

This summary is machine-generated.

This study introduces frozen spatial coherence, a partially coherent version of frozen waves. It enables precise control over optical field correlations along the propagation axis using Bessel beams.

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Area of Science:

Optics and Photonics
Wave Propagation
Coherence Theory

Background:

Frozen waves offer a theoretical framework for controlling wave properties.
Partially coherent light sources present unique challenges in controlling spatial correlations.
Bessel beams are known for their non-diffracting properties.

Purpose of the Study:

To develop a theoretical framework for partially coherent frozen waves, termed frozen spatial coherence.
To enable the creation of specific two-point correlation structures in optical fields.
To design optical fields with tunable coherence properties along the propagation axis.

Main Methods:

Superposing partially coherent zero-order Bessel beams.
Developing a theoretical framework based on the cross-spectral density.

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Utilizing a two-dimensional Fourier series representation for the cross-spectral density.

Main Results:

Demonstrated a method to achieve frozen spatial coherence.
Showcased the ability to engineer desired two-point correlation structures.
Designed a partially coherent field with a finite range of high coherence.

Conclusions:

Frozen spatial coherence provides a viable theoretical framework for controlling correlations in partially coherent light.
The proposed method allows for precise engineering of coherence properties.
This research opens possibilities for novel applications in optical field manipulation.