Hyperbolic Phonon-Plasmon Modes in Grounded Graphene-hBN Heterostructures for Mid-Infrared Applications

Heydari, Mohammad Bagher; Karimipour, Majid; Shirkolaei, Morteza Mohammadi

doi:10.48550/arxiv.2211.03701

Cited by 1 publication

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“…The optical conductivity of graphene, a tunable parameter that can be adjusted by electrostatic bias (or chemical doping) and magnetostatic bias, plays the main role in the design and fabrication of graphene-based plasmonic devices in the THz frequencies [1][2][3]. This key feature makes graphene a fascinating material in the THz region in which many various devices have been presented and reported in the literature such as couplers [4][5][6], filters [7][8][9], resonators [10][11][12], circulators [13][14][15][16], waveguides [17][18][19][20][21][22][23][24][25][26], sensing [27][28][29][30][31][32], imaging [33,34], hyperbolic structures [35][36][37][38][39][40][41][42][43], and polarization converters [44]. Graphene-based waveguides have various structures such as planar [18,…”

Section: Introductionmentioning

confidence: 99%

Hybrid Plasma-Graphene Elliptical Structures: An Analytical Approach

Heydari

Shirkolaei

Karimipour

2023

Preprint

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In this article, a new theoretical model is proposed for general plasma-based elliptical structures with graphene layers. The figure of merit (FOM) of a graphene-based elliptical waveguide, forming graphene-InSb-graphene-SiO2-Si layers, is calculated and studied at the frequency range of 30–50 THz. Only the first two Surface Plasmon Polariton (SPP) modes are studied in this paper. The proposed waveguide can support tunable, non-reciprocal SPPs in which their modal properties are varied by chemical potential and the external magnetic field. At the frequency of 40 THz, the FOM of 139 for this waveguide is reported for the B = 1 T and µc = 0.9 eV. The authors believe that the integration of graphene layers and gyro-electric materials can open new research areas in tunable non-reciprocal devices in the mid-infrared region.

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