Diffraction-free nonevanescent nano-beams using the Fresnel-waveguide concept

TL;DR

This paper proposes a novel approach to generate diffraction-free nano-beams using the Fresnel-waveguide concept, overcoming intensity attenuation issues with tailored refractive index materials, enabling new applications in optics.

Contribution

It introduces a method to produce diffraction-free nano-beams that mitigate intensity loss by employing materials with specific refractive indices, advancing nanophotonics.

Findings

Demonstrates a solution to intensity attenuation in diffraction-free beams

Uses materials with tailored refractive indices for beam propagation

Potential applications in advanced optical systems

Abstract

Strong intensity attenuation limits the use of conventional diffraction-free optical elements. We show a possible solution to the exponential intensity attenuation limiting the use of Fresnel-type diffraction-free nanometer-scale optics by using materials with appropriately chosen refractive index. Such beams may be applied for technical and physical problems.