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Updated: Apr 8, 2026
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Author Spotlight: Unlocking New Insights in fNIRS Studies - A Novel Framework for Inter-Brain Synchrony Analysis
Published on: October 6, 2023
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Summary
Convolution of two degrees of coherence can generate new coherence properties for optical fields. This technique allows for the modulation of far fields and can be implemented using liquid crystal spatial light modulators.
Area of Science:
- Optics and Photonics
- Statistical Optics
Background:
- Coherence properties of light are fundamental in optical field characterization.
- Schell-model beams are a widely studied class of optical fields with specific coherence properties.
Purpose of the Study:
- To establish conditions for the convolution of two degrees of coherence to form a new, legitimate degree of coherence.
- To demonstrate the generation of modulated far fields through coherence convolution.
Main Methods:
- Analysis of wide-sense statistically stationary Schell-model beam-like optical fields.
- Mathematical formulation of coherence convolution operations.
- Illustrative examples using specific optical field configurations.
Main Results:
- Conditions for the validity of coherence convolution were derived.
- Convolution enables the generation of far fields that are modulated versions of other fields.
- The process is demonstrated to be practically achievable.
Conclusions:
- Coherence convolution is a valid method for creating novel degrees of coherence.
- This technique offers a route to control and modulate optical far fields.
- Liquid crystal spatial light modulators provide a practical means for implementing coherence convolution.
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