Active Photoswitching of Sharp Fano Resonances in THz Metadevices.

Manjappa, Manukumara; Srivastava, Yogesh Kumar; Cong, Longqing; Al-Naib, Ibraheem; Singh, Ranjan · Adv Mater · 2017

basic_science · Level V

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Abstract

Fano resonances offer exciting features in enhancing the non-linearity and sensing capabilities in metamaterial systems. An active photoswitching of Fano resonances in a terahertz metadevice at low optical pump powers is demonstrated, which signifies the extreme sensitivity of the high-quality-factor resonant electric field to the external light illumination.