Broadband absorbers and selective emitters based on plasmonic Brewster metasurfaces

Authors

• Christos Argyropoulos, University of Texas at AustinFollow
• Khai Q. Le, University of Texas at Austin
• Nadia Mattiucci, AEgis Technologies
• Giuseppe D'Aguanno, AEgis Technologies
• Andrea Alu, University of Texas at AustinFollow

Document Type

Article

Date of this Version

2013

Citation

PHYSICAL REVIEW B 87, 205112 (2013)

Comments

©2013 American Physical Society

DOI: 10.1103/PhysRevB.87.205112

Abstract

We discuss the possibility of realizing utlrabroadband omnidirectional absorbers and angularly selective coherent thermal emitters based on properly patterned plasmonic metastructures. Instead of relying on resonant concentration effects that inherently limit the bandwidth, we base our design on the combination of two inherently nonresonant effects: plasmonic Brewster funneling and adiabatic plasmonic focusing. Using this approach, we propose compact, broadband absorption and emission spanning terahertz, infrared, and optical frequencies, ideal for various energy and defense applications.