Experimental demonstration of a broadband all-dielectric metamaterial perfect reflector
Abstract
All-dielectric metamaterials utilizing Mie resonances in high-permittivity dielectric resonators offer a low-loss alternative to plasmonic metamaterials. Here we present the demonstration of a single-negative all-dielectric metamaterial, comprised of a single layer of cylindrical silicon resonators on a silicon-on-insulator substrate, that possesses peak reflectance over 99% and an average reflectance over 98% across a 200 nm wide bandwidth in the short-wavelength infrared region. The study is also extended to disordered metamaterials, demonstrating a correlation between the degree of disorder and the reduction in reflectance. It is shown that near-unity reflection is preserved as long as resonator interaction is avoided. Realization of near-unity reflection from disordered metamaterials opens the door to large-area implementations using low-cost self-assembly based fabrication techniques.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 28, 2014
- Source ID
- 10.1063/1.4873521
Entities
People
- Brian A. Slovick
- Jason Valentine
- Parikshit Moitra
- Siddhartha Krishnamurthy
- Zhi Gang Yu
Organizations
- Office of Naval Research
- SRI International
- Vanderbilt University