Photonic Jets Formation by Non Spherical Axially and Spatially Asymmetric 3D Dielectric Particles

Abstract

In this Chapter we address a fundamental question: is a spherical-aided shape of dielectric particle to form a photonic jet unique or the spherical shape of particle may be extended to other form? With the aim to obtain subwavelength focusing, an alternative mechanism (in contrast to spherical-aided particles) to produce photonic jets by using 3D and 2D dielectric cuboids are discussed. The principle possibility of generation and management of photonic jets parameters (including 3D) by choosing the particle of 3D arbitrary shape free of axial spatial symmetry are shown for the first time. Also for the first time the possibility of photonic jet formation in the interaction of a plane wave front with a particle located on a reflecting substrate in the “reflection” mode (flat focusing mirror) are offered.