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October 17, 2025Open Access

Nonparaxial Exploding Cylindrical Vector Beams

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Using a full electromagnetic model, this research highlights the intricacies of exploding cylindrical vector beams, suggesting novel applications.

The singularity observed in exploding cylindrical vector beams results from the paraxial approximation, not the actual physics.
Fresnel diffraction integral predicts infinite intensity at a focus, illustrating unique beam concentration effects.
This method allows dynamic control of focal intensity down to the sub-wavelength scale using a single beam.
The phenomenon continues up to a unit numerical aperture, demonstrating potential for advanced optical applications.

Barriopedro et al. (2025) studied this question.

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Using a full electromagnetic model, this research highlights the intricacies of exploding cylindrical vector beams, suggesting novel applications.