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Active tuning of high-Q dielectric metasurfaces

Parry, Matthew; Komar, Andrei; Hopkins, Ben; Campione, Salvatore; Liu, Sheng; Miroshnichenko, Andrey; Nogan, John; Sinclair, Michael B.; Brener, Igal; Neshev, Dragomir


We demonstrate the active tuning of all-dielectric metasurfaces exhibiting high-quality factor (high-Q) resonances. The active control is provided by embedding the asymmetric silicon meta-atoms with liquid crystals, which allows the relative index of refraction to be controlled through heating. It is found that high quality factor resonances (Q = 270 ± 30) can be tuned over more than three resonance widths. Our results demonstrate the feasibility of using all-dielectric metasurfaces to...[Show more]

CollectionsANU Research Publications
Date published: 2017-08-02
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.4997301
Access Rights: Open Access


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