Abstract
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.
| Original language | English |
|---|---|
| Article number | 053102 |
| Journal | Applied Physics Letters |
| Volume | 111 |
| Issue number | 5 |
| DOIs | |
| State | Published - Jul 31 2017 |
| Externally published | Yes |
Funding
We would like to thank Yuri Kivshar for the assistance he provided. We acknowledge the financial support by the Australian Research Council and the use of the Australian National Fabrication Facility (ANFF), the ACT Node. This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under Contract No. DE-NA-0003525.