Graphene-based tunable plasmon induced transparency in gold strips

Mohsin Habib; Alireza Rahimi Rashed; Ekmel Ozbay; Humeyra Caglayan

doi:10.1364/OME.8.001069

Graphene-based tunable plasmon induced transparency in gold strips

Mohsin Habib
, Alireza Rahimi Rashed
, Ekmel Ozbay
, Humeyra Caglayan^*

^*Corresponding author for this work

Not published at VTT

Bilkent University
Tampere University of Technology (TUT)

Research output: Contribution to journal › Article › Scientific › peer-review

21 Citations (Scopus)

Abstract

Plasmon induced transparency (PIT) has been numerically investigated and experimentally realized by two parallel gold strips on graphene for the mid-infrared (MIR) range. The PIT response is realized by the weak hybridization of two bright modes of the gold strips. The response of the device is adjusted with the lengths of two strips and tuned electrically in real time by changing the Fermi level (E_f) of the graphene. E_f is changed to tune the resonance frequency of the transparency window. A top gating is used to achieve high tunability and a 263 nm shift is obtained by changing the gate voltage from −0.6 V to 2.4 V. The spectral contrast ratio of our devices is up to 82%.

Original language	English
Pages (from-to)	1069-1074
Number of pages	6
Journal	Optical Materials Express
Volume	8
Issue number	4
DOIs	https://doi.org/10.1364/OME.8.001069
Publication status	Published - 2018
MoE publication type	A1 Journal article-refereed

Funding

Academy of Finland, Competitive Funding to Strengthen University Research Profiles (301820). E.O. acknowledges the partial support from the Turkish Academy of Sciences.

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10.1364/OME.8.001069

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title = "Graphene-based tunable plasmon induced transparency in gold strips",

abstract = "Plasmon induced transparency (PIT) has been numerically investigated and experimentally realized by two parallel gold strips on graphene for the mid-infrared (MIR) range. The PIT response is realized by the weak hybridization of two bright modes of the gold strips. The response of the device is adjusted with the lengths of two strips and tuned electrically in real time by changing the Fermi level (Ef) of the graphene. Ef is changed to tune the resonance frequency of the transparency window. A top gating is used to achieve high tunability and a 263 nm shift is obtained by changing the gate voltage from −0.6 V to 2.4 V. The spectral contrast ratio of our devices is up to 82\%.",

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AU - Habib, Mohsin

AU - Rashed, Alireza Rahimi

AU - Ozbay, Ekmel

AU - Caglayan, Humeyra

PY - 2018

Y1 - 2018

N2 - Plasmon induced transparency (PIT) has been numerically investigated and experimentally realized by two parallel gold strips on graphene for the mid-infrared (MIR) range. The PIT response is realized by the weak hybridization of two bright modes of the gold strips. The response of the device is adjusted with the lengths of two strips and tuned electrically in real time by changing the Fermi level (Ef) of the graphene. Ef is changed to tune the resonance frequency of the transparency window. A top gating is used to achieve high tunability and a 263 nm shift is obtained by changing the gate voltage from −0.6 V to 2.4 V. The spectral contrast ratio of our devices is up to 82%.

AB - Plasmon induced transparency (PIT) has been numerically investigated and experimentally realized by two parallel gold strips on graphene for the mid-infrared (MIR) range. The PIT response is realized by the weak hybridization of two bright modes of the gold strips. The response of the device is adjusted with the lengths of two strips and tuned electrically in real time by changing the Fermi level (Ef) of the graphene. Ef is changed to tune the resonance frequency of the transparency window. A top gating is used to achieve high tunability and a 263 nm shift is obtained by changing the gate voltage from −0.6 V to 2.4 V. The spectral contrast ratio of our devices is up to 82%.

UR - https://www.scopus.com/pages/publications/85044841180

U2 - 10.1364/OME.8.001069

DO - 10.1364/OME.8.001069

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VL - 8

SP - 1069

EP - 1074

JO - Optical Materials Express

JF - Optical Materials Express

IS - 4

ER -

Graphene-based tunable plasmon induced transparency in gold strips

Abstract

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