Localized Photonic jets from flat 3D dielectric cuboids in the reflection mode

TL;DR

This paper demonstrates the formation of photonic jets using flat 3D dielectric cuboids in reflection mode, with simulations showing potential for scalable optical applications like microscopy and sensing.

Contribution

It introduces a novel reflection-mode dielectric cuboid design for generating photonic jets, expanding the understanding beyond traditional spherical particles.

Findings

Photonic jets can be formed using flat 3D dielectric cuboids.

Simulation results are scalable across frequencies including optical.

Potential applications in microscopy and sensor technology.

Abstract

A photonic jet (terajet at THz frequencies) commonly denotes a specific spatially localized region in the near-field at the front side of a dielectric particle with diameter comparable with wavelength illuminated with a plane wave from its backside (i.e., the jet emerges from the shadow surface of a dielectric particle). In this paper the formation of photonic is demonstrated using the recently proposed 3D dielectric cuboids working in reflection mode when the specific spatially localized region is localized towards the direction of incidence wavefront. The results of simulations based on Finite Integration Technique are discussed. All dimensions are given in wavelength units so that all results can be scaled any frequency of interest including optical frequencies, simplifying the fabrication process compared with spherical dielectrics. The results here presented may be of interest for novel applications including microscopy techniques and sensors.