Publications

Active tuning of high-Q dielectric metasurfaces

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

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 construct tunable narrow-band filters.