Broadband, wide-angle and tunable terahertz absorber based on cross-shaped graphene arrays

Research output: Contribution to journalJournal article – Annual report year: 2017Researchpeer-review

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Broadband, wide-angle and tunable terahertz absorber based on cross-shaped graphene arrays. / Xiao, Binggang; Gu, Mingyue; Xiao, Sanshui .

In: Applied Optics, Vol. 56, No. 19, 2017, p. 5458-5462.

Research output: Contribution to journalJournal article – Annual report year: 2017Researchpeer-review

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@article{3c4295a1d7cb4f4ba4c675c4bea7a318,
title = "Broadband, wide-angle and tunable terahertz absorber based on cross-shaped graphene arrays",
abstract = "Tunable terahertz absorbers composed of periodically cross-shaped graphene arrays with the ability to achieve nearunity absorbance are proposed and studied. Our results demonstrate that the bandwidth of absorption rate above 90{\%} can reach up to 1.13 terahertz by use of a single layer of cross-shaped graphene arrays. By simply stacking the double layer cross-shaped graphene with careful design, the working bandwidth can be broadened compared with the single-layer graphene-based absorber. The proposed absorbers have the properties of being polarization insensitive and having large angle tolerance, and the tunability of the Fermi level in graphene allows us to realize tunable terahertz absorbers with potential interest in integrated terahertz optoelectronic devices.",
author = "Binggang Xiao and Mingyue Gu and Sanshui Xiao",
year = "2017",
doi = "10.1364/AO.56.005458",
language = "English",
volume = "56",
pages = "5458--5462",
journal = "Applied Optics",
issn = "1559-128X",
publisher = "Optical Society of America",
number = "19",

}

RIS

TY - JOUR

T1 - Broadband, wide-angle and tunable terahertz absorber based on cross-shaped graphene arrays

AU - Xiao, Binggang

AU - Gu, Mingyue

AU - Xiao, Sanshui

PY - 2017

Y1 - 2017

N2 - Tunable terahertz absorbers composed of periodically cross-shaped graphene arrays with the ability to achieve nearunity absorbance are proposed and studied. Our results demonstrate that the bandwidth of absorption rate above 90% can reach up to 1.13 terahertz by use of a single layer of cross-shaped graphene arrays. By simply stacking the double layer cross-shaped graphene with careful design, the working bandwidth can be broadened compared with the single-layer graphene-based absorber. The proposed absorbers have the properties of being polarization insensitive and having large angle tolerance, and the tunability of the Fermi level in graphene allows us to realize tunable terahertz absorbers with potential interest in integrated terahertz optoelectronic devices.

AB - Tunable terahertz absorbers composed of periodically cross-shaped graphene arrays with the ability to achieve nearunity absorbance are proposed and studied. Our results demonstrate that the bandwidth of absorption rate above 90% can reach up to 1.13 terahertz by use of a single layer of cross-shaped graphene arrays. By simply stacking the double layer cross-shaped graphene with careful design, the working bandwidth can be broadened compared with the single-layer graphene-based absorber. The proposed absorbers have the properties of being polarization insensitive and having large angle tolerance, and the tunability of the Fermi level in graphene allows us to realize tunable terahertz absorbers with potential interest in integrated terahertz optoelectronic devices.

U2 - 10.1364/AO.56.005458

DO - 10.1364/AO.56.005458

M3 - Journal article

VL - 56

SP - 5458

EP - 5462

JO - Applied Optics

JF - Applied Optics

SN - 1559-128X

IS - 19

ER -