Active tuning of high-Q dielectric metasurfaces

作者：Parry Matthew^*; Komar Andrei; Hopkins Ben; Campione Salvatore; Liu Sheng; Miroshnichenko Andrey E; Nogan John; Sinclair Michael B; Brener Igal; Neshev Dragomir N

来源：Applied Physics Letters, 2017, 111(5): 053102.

DOI：10.1063/1.4997301

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. Published by AIP Publishing.

• 出版日期2017-7-31