AI Article Synopsis
- Silicon-based all-dielectric metamaterials (SAMs) are gaining attention for their low loss and simple structure but face challenges with narrow bandwidth and low tunability.
- This study introduces a method to improve SAMs by adding a layer of strontium titanate (STO), which allows for tunable properties in the terahertz (THz) range.
- The integration of STO enables thermal tuning of the THz responses of SAMs, paving the way for applications across THz to optical ranges.
Article Abstract
Silicon-based all-dielectric metamaterials (SAMs), with advantages like low loss and simple structure, are attracting more and more attention. However, SAMs usually suffer from narrow bandwidth and low tunability, and thereby their applications are seriously impeded. In this work, we propose and experimentally demonstrate a tunable SAMs in terahertz (THz) ranges by covering the SAMs with a layer of active medium, strontium titanate (STO). It shows that the THz responses of SAMs can be thermally tuned due to the temperature-dependent permittivity of STO. This work provides a convenient route to tunable SAMs from THz to optical ranges.
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| http://dx.doi.org/10.1364/OE.25.022158 | DOI Listing |
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