Highly-Dispersive Unidirectional Reflectionless Phenomenon Based On High-Order Plasmon Resonance In Metamaterials

In this work, we design a structure of metamaterials that consists of double sliver-ring resonators, in which highly-dispersive unidirectional reflectionlessness and absorption are achieved based on high-order plasmon resonance. Reflections of +z and -z directions at 461.34 THz (456.68 THz) are similar to 0 (0.82) and similar to 0.85 (0) when the distance d = 222.9 nm (259.8 nm), respectively. High absorption of similar to 0.97 and the quality factor of similar to 435 can be obtained in the loss metal structure at room temperature. What's more, unidirectional reflectionlessness is investigated at low temperature. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement