Open AccessMacroscopic wave-optical simulation of dielectric metasurfaces
Author(s) -
Sebastian Linß,
Dirk Michaelis,
Uwe D. Zeitner
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.415529
Subject(s) - beam splitter , optics , holography , scaling , polarization (electrochemistry) , dielectric , grid , physics , computer simulation , wavefront , computer science , optoelectronics , laser , chemistry , geometry , mathematics , mechanics
We propose a novel method for the wave-optical simulation of diffractive optical elements (DOEs) like metasurfaces or computer-generated holograms (CGHs). Existing techniques mostly rely on the assumption of local periodicity to predict the performance of elements. The utilization of a specially adapted finite-difference beam propagation method (BPM) allows the semi-rigorous simulation of entire DOEs within a reasonable runtime due to linear scaling with the number of grid points. Its applicability is demonstrated by the simulation of a metalens and a polarization-dependent beamsplitter, both based on effective-medium metasurfaces. A comparison shows high conformity to rigorous simulations.