Terahertz aperture SNOM mapping of metamaterial coupled resonators

Nikita W. Almond; Rodolfo Hermans; Lucy L. Hale; Stephen J. Kindness; Wladislaw Michailow; Binbin Wei; Xavier Romain; Sheng Ye; Robert Young; Riccardo Degl'Innocenti; Harvey E. Beere; David A. Ritchie; Oleg Mitrofanov

doi:10.1117/12.2568045

20 August 2020 Terahertz aperture SNOM mapping of metamaterial coupled resonators

Nikita W. Almond, Rodolfo Hermans, Lucy L. Hale, Stephen J. Kindness, Wladislaw Michailow, Binbin Wei, Xavier Romain, Sheng Ye, Robert Young, Riccardo Degl'Innocenti, Harvey E. Beere, David A. Ritchie, Oleg Mitrofanov

Author Affiliations +

Proceedings Volume 11460, Metamaterials, Metadevices, and Metasystems 2020; 114601R (2020) https://doi.org/10.1117/12.2568045
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Conference Poster

Abstract

Metamaterials have emerged as the basis of a novel optoelectronic platform operating in the terahertz (THz) range, due to their versatility and strong light-matter interaction. The necessary design of efficient modulators and detectors requires a detailed investigation of metamaterial resonances and their interplay with an active medium, e.g. graphene. An aperture-SNOM (a-SNOM) system based on picosecond THz pulses was used to investigate the spectral characteristics of a set of lithographically tuned metamaterial coupled resonators. This approach allowed the mapping of the supported E-field of each resonator a few microns from the device plane, yielding bonding and antibonding modes reminiscent of electromagnetic induced transparency.

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Nikita W. Almond, Rodolfo Hermans, Lucy L. Hale, Stephen J. Kindness, Wladislaw Michailow, Binbin Wei, Xavier Romain, Sheng Ye, Robert Young, Riccardo Degl'Innocenti, Harvey E. Beere, David A. Ritchie, and Oleg Mitrofanov "Terahertz aperture SNOM mapping of metamaterial coupled resonators", Proc. SPIE 11460, Metamaterials, Metadevices, and Metasystems 2020, 114601R (20 August 2020); https://doi.org/10.1117/12.2568045

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