Graphene-based tunable plasmon induced transparency in gold strips

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

    Research output: Contribution to journalArticleScientificpeer-review

    21 Citations (Scopus)
    119 Downloads (Pure)

    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%. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.

    Original languageEnglish
    Pages (from-to)1069-1074
    Number of pages6
    JournalOptical Materials Express
    Volume8
    Issue number4
    DOIs
    Publication statusPublished - 1 Apr 2018
    Publication typeA1 Journal article-refereed

    Keywords

    • ELECTROMAGNETICALLY INDUCED TRANSPARENCY
    • SLOW LIGHT
    • METAMATERIAL
    • SPECTROSCOPY
    • RESONATORS
    • DYNAMICS
    • ANALOG

    Publication forum classification

    • Publication forum level 1

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials

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