Loss-Free Negative-Index Metamaterials Using Forward Light Scattering in Dielectric Meta-Atoms
- Authors
- Yoo, SeokJae; Lee, Suyeon; Park, Q-Han
- Issue Date
- 4월-2018
- Publisher
- AMER CHEMICAL SOC
- Keywords
- metamaterials; effective medium theory; refraction; reflection; optical resonators
- Citation
- ACS PHOTONICS, v.5, no.4, pp.1370 - 1374
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS PHOTONICS
- Volume
- 5
- Number
- 4
- Start Page
- 1370
- End Page
- 1374
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/76268
- DOI
- 10.1021/acsphotonics.7b01400
- ISSN
- 2330-4022
- Abstract
- Negative-index metamaterials are significantly limited by their inherent losses. We demonstrate that a negative index without dissipative and reflective losses can be achieved in subwavelength dielectric cuboid arrays. We can avoid reflection by making dielectric cuboids exhibit the resonant forward scattering of light, while dissipative loss is inherently absent in dielectric materials. A joint study combining theoretical and experimental research demonstrates that loss-free negative-index metamaterials can be realized. They fulfill the criteria of negative refraction based on causality, while conventional active loss compensation schemes lead to the disappearance of negative refraction by causality.
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Collections - College of Science > Department of Physics > 1. Journal Articles
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