Electrically controllable plasmon induced reflectance in hybrid metamaterials

Mohsin Habib; Murat Gokbayrak; Ekmel Ozbay; Humeyra Caglayan

doi:10.1063/1.5063461

Electrically controllable plasmon induced reflectance in hybrid metamaterials

Mohsin Habib
, Murat Gokbayrak
, Ekmel Ozbay
, Humeyra Caglayan^*

^*Corresponding author for this work

Not published at VTT

Tampere University
Bilkent University

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

21 Citations (Scopus)

Abstract

The tunable plasmon induced reflectance (PIR) effect has been numerically investigated and experimentally realized by hybrid metal-graphene metamaterials. The PIR effect is produced by two parallel strips of gold (Au) and controlled electrically by applying the gate voltage to the graphene layer. The PIR response is generated by the weak hybridization of two bright modes of the gold strips and tuned by changing the Fermi level (E_f) of the graphene. The total shift of 211.7 nm was achieved in the reflection peak by applying only 3 V. This concept of real time electrical tuning of PIR, with a modulation depth of ∼49% and a spectral contrast ratio of 66.6%, can be used for designing optical switches, optical modulators, and tunable sensors.

Original language	English
Article number	221105
Journal	Applied Physics Letters
Volume	113
Issue number	22
DOIs	https://doi.org/10.1063/1.5063461
Publication status	Published - 2018
MoE publication type	A1 Journal article-refereed

Funding

This work was supported by TUBITAK under Project No. 117F150. Competitive funding to strengthen university research profiles was funded by the Academy of Finland, Decision No. 301820. One of the authors (E.O.) also acknowledges the partial support from the Turkish Academy of Sciences.

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abstract = "The tunable plasmon induced reflectance (PIR) effect has been numerically investigated and experimentally realized by hybrid metal-graphene metamaterials. The PIR effect is produced by two parallel strips of gold (Au) and controlled electrically by applying the gate voltage to the graphene layer. The PIR response is generated by the weak hybridization of two bright modes of the gold strips and tuned by changing the Fermi level (Ef) of the graphene. The total shift of 211.7 nm was achieved in the reflection peak by applying only 3 V. This concept of real time electrical tuning of PIR, with a modulation depth of ∼49\% and a spectral contrast ratio of 66.6\%, can be used for designing optical switches, optical modulators, and tunable sensors.",

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AU - Gokbayrak, Murat

AU - Ozbay, Ekmel

AU - Caglayan, Humeyra

PY - 2018

Y1 - 2018

N2 - The tunable plasmon induced reflectance (PIR) effect has been numerically investigated and experimentally realized by hybrid metal-graphene metamaterials. The PIR effect is produced by two parallel strips of gold (Au) and controlled electrically by applying the gate voltage to the graphene layer. The PIR response is generated by the weak hybridization of two bright modes of the gold strips and tuned by changing the Fermi level (Ef) of the graphene. The total shift of 211.7 nm was achieved in the reflection peak by applying only 3 V. This concept of real time electrical tuning of PIR, with a modulation depth of ∼49% and a spectral contrast ratio of 66.6%, can be used for designing optical switches, optical modulators, and tunable sensors.

AB - The tunable plasmon induced reflectance (PIR) effect has been numerically investigated and experimentally realized by hybrid metal-graphene metamaterials. The PIR effect is produced by two parallel strips of gold (Au) and controlled electrically by applying the gate voltage to the graphene layer. The PIR response is generated by the weak hybridization of two bright modes of the gold strips and tuned by changing the Fermi level (Ef) of the graphene. The total shift of 211.7 nm was achieved in the reflection peak by applying only 3 V. This concept of real time electrical tuning of PIR, with a modulation depth of ∼49% and a spectral contrast ratio of 66.6%, can be used for designing optical switches, optical modulators, and tunable sensors.

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JO - Applied Physics Letters

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ER -

Electrically controllable plasmon induced reflectance in hybrid metamaterials

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