Coupling of Epsilon-Near-Zero Mode to Gap Plasmon Mode for Flat-Top Wideband Perfect Light Absorption

• Published in: ACS photonics Vol. 5; no. 3; pp. 776 - 781
• Main Authors: Hendrickson, Joshua R, Vangala, Shivashankar, Dass, Chandriker, Gibson, Ricky, Goldsmith, John, Leedy, Kevin, Walker, Dennis E, Cleary, Justin W, Kim, Wonkyu, Guo, Junpeng
• Format: Journal Article
• Language: English
• Published: American Chemical Society 21.03.2018
• Subjects: perfect light absorption; epsilon-near-zero; plasmonics; light−matter coupling; metasurface

Epsilon-near-zero (ENZ) materials, when probed at or near wavelengths corresponding to their zero permittivity crossing points, have unique and interesting properties that can be exploited for enhancing nanoscale light–matter interactions. Here, we experimentally show that over an order of magnitude...