Diffraction Resistant Scalar Beams Generated by a Parabolic Reflector and a Source of Spherical Waves

TL;DR

This paper presents a simple method to generate diffraction-resistant scalar beams using a parabolic reflector and a slightly displaced spherical wave source, offering a practical approach for long-range wave propagation.

Contribution

It introduces a novel technique for producing diffraction-resistant beams with a parabolic reflector and a displaced spherical source, expanding options for long-distance wave transmission.

Findings

Beams exhibit resistance to diffraction effects.

Method is simple and suitable for long-range applications.

Main characteristics depend on reflector size and source displacement.

Abstract

In this work, we propose the generation of diffraction resistant beams by using a parabolic reflector and a source of spherical waves positioned at a point slightly displaced from its focus (away from the reflector). In our analysis, considering the reflector dimensions much greater than the wavelength, we describe the main characteristics of the resulting beams, showing their properties of resistance to the diffraction effects. Due to its simplicity, this method may be an interesting alternative for the generation of long range diffraction resistant waves.