Metamaterials to bridge propagating waves with surface waves and control electromagnetic waves

Qiong He, Shulin Sun, Shiyi Xiao, Xin Li, Din Ping Tsai, Lei Zhou

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

In this work, we demonstrate theoretically and experimentally that a specific gradient-index meta-surface can convert a PW to a SW with nearly 100% efficiency. Distinct from conventional devices such as prism or grating couplers, the momentum mismatch between PW and SW is compensated by the reflection-phase gradient of the meta-surface, and a nearly perfect PW-SW conversion can happen for any incidence angle larger than a critical value. Experiments in the microwave region, including both far-field and near-field characterizations, are in excellent agreement with full-wave simulations. Based on gradient metasurface's idea, we also realized a gradient meta-surface supporting high-efficiency anomalous reflection for near-infrared light and a flat focusing lens for microwave.

Original languageEnglish
Title of host publicationProceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013
Pages1347-1348
Number of pages2
DOIs
Publication statusPublished - Sep 2013
Externally publishedYes
Event2013 15th International Conference on Electromagnetics in Advanced Applications, ICEAA 2013 - Turin, Italy
Duration: 9 Sep 201313 Sep 2013

Publication series

NameProceedings of the 2013 International Conference on Electromagnetics in Advanced Applications, ICEAA 2013

Conference

Conference2013 15th International Conference on Electromagnetics in Advanced Applications, ICEAA 2013
CountryItaly
CityTurin
Period9/09/1313/09/13

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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