Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102926
Title: Efficient HIE-FDTD method for designing a dual-band anisotropic terahertz absorption structure
Authors: Zhou, Y.
Li, H.
Li, L.
Cai, Y.
Zeyde, K.
Han, X.
Issue Date: 2021
Publisher: The Optical Society
Citation: Efficient HIE-FDTD method for designing a dual-band anisotropic terahertz absorption structure / Y. Zhou, H. Li, L. Li, et al. — DOI 10.1364/OE.427420 // Optics Express. — 2021. — Vol. 29. — Iss. 12. — P. 18611-18623.
Abstract: The finite-difference time-domain (FDTD) method is considered to be one of the most accurate and common methods for the simulation of optical devices. However, the conventional FDTD method is subject to the Courant-Friedrich-Levy condition, resulting in extremely low efficiency for calculating two-dimensional materials (2DMs). Recent researches on the hybrid implicit-explicit FDTD (HIE-FDTD) method show that the method can efficiently simulate homogeneous and isotropic 2DMs such as graphene sheet; however, it is inapplicable to the anisotropic medium. In this paper, we propose an in-plane anisotropic HIE-FDTD method to simulate optical devices containing graphene and black phosphorus (BP) sheets. Numerical analysis shows that the proposed method is accurate and efficient. With this method, we present a novel multi-layer graphene-BP-based dual-band anisotropic terahertz absorption structure (GBP-DATAS) and analyze its optical characteristics. Combining the advantages of graphene and BP localized surface plasmons, the GBP-DATAS demonstrates strong anisotropic plasmonic resonance and high absorption rate in the terahertz band. © 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
Keywords: ANISOTROPY
BLACK PHOSPHORUS
FINITE DIFFERENCE TIME DOMAIN METHOD
GRAPHENE
NUMERICAL METHODS
OPTICAL DEVICES
SURFACE PLASMON RESONANCE
SURFACE PLASMONS
ANISOTROPIC MEDIUM
HOMOGENEOUS AND ISOTROPIC
IMPLICIT-EXPLICIT
LOCALIZED SURFACE PLASMON
OPTICAL CHARACTERISTICS
PLASMONIC RESONANCES
TERAHERTZ ABSORPTION
TWO-DIMENSIONAL MATERIALS
TIME DOMAIN ANALYSIS
URI: http://hdl.handle.net/10995/102926
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85107308478
PURE ID: 22104727
2dcb5a81-f8c7-41e1-a1b4-5ce046e0a2d8
ISSN: 10944087
DOI: 10.1364/OE.427420
metadata.dc.description.sponsorship: Natural Science BasicResearch Program of Shaanxi Province (2020JM-515); KeyResearch and Development Projects of Shaanxi Province (2018GY-151); Natural Science Foundation of Fujian Province (2020J01294).
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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