Ultrawideband Dispersion Control of a Metamaterial Surface for Perfectly-Matched-Layer-Like Absorption
Open Access
- 29 October 2013
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 111 (18), 187402
- https://doi.org/10.1103/physrevlett.111.187402
Abstract
Narrow bandwidth is a fundamental issue plaguing practical applications of metamaterial absorbers. In this Letter, we show that by deliberately controlling the dispersion and dissipation of a metamaterial, an ultrawideband perfect metamaterial absorber with complex-valued constitutive parameters strictly satisfying the modified model of a perfectly matched layer, can be achieved. The nearly perfect power absorption, better than 99%, was experimentally observed in an unprecedented bandwidth of 39%, approaching the theoretical Rozanov limit. We expect a wide range of applications to emerge from this general concept.Keywords
This publication has 30 references indexed in Scilit:
- Ultrabroadband Light Absorption by a Sawtooth Anisotropic Metamaterial SlabNano Letters, 2012
- Infrared Perfect Absorber and Its Application As Plasmonic SensorNano Letters, 2010
- A black body absorber from vertically aligned single-walled carbon nanotubesProceedings of the National Academy of Sciences of the United States of America, 2009
- Optical conductivity of graphene in the visible region of the spectrumPhysical Review B, 2008
- Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructuresNature Nanotechnology, 2007
- Robust method to retrieve the constitutive effective parameters of metamaterialsPhysical Review E, 2004
- Determination of effective permittivity and permeability of metamaterials from reflection and transmission coefficientsPhysical Review B, 2002
- Photonic band-gap effects and magnetic activity in dielectric compositesJournal of Physics: Condensed Matter, 2002
- Ultimate thickness to bandwidth ratio of radar absorbersIEEE Transactions on Antennas and Propagation, 2000
- A perfectly matched anisotropic absorber for use as an absorbing boundary conditionIEEE Transactions on Antennas and Propagation, 1995