Possibilities to generation of optical non-diffracting beams by holographic metasurfaces using surface impedance

Abstract

In this work, we present the computational simulations of holographic metasurfaces to realization of the optical non-diffracting beams. The metasurfaces are designed by the holographic technique and the computer-generated holograms (CGHs) of optical non-diffracting beams are generated computationally. These holographic metasurfaces (HMS) are obtained by modeling a periodic lattice of metallic patches on dielectric substrates with sub-wavelength dimensions, where each one of those unit cells change the phase of the incoming wave. We use the surface impedance (Z) to control the phase of the electromagnetic wave through the metasurface in each unit cell. The sub-wavelength dimensions guarantees that the effective medium theory is fulfilled. The results is according to the predicted by nondiffracting beams theory. These results are important given the possibilities of applications in optical tweezers, optics communications, optical metrology, 3D imaging, and others in optics and photonics.

Algoritmos simplificados de hologramas computacionais: II – para geração de feixes e vórtices ópticos

“…Estes vêm possibilitando, cada vez mais, a implementação experimental de sistemas holográficos de registro e reconstrução numérica e/ou óptica de ondas ópticas de objetos e formas e feixes ópticos [31,32,[34][35][36][37]. Bem como, outros meios de registro holográfico, materiais fotossensíveis, fotorrefrativos e metasuperfícies holográficas [38][39][40][41][42].…”