Dynamic coherent perfect absorption in nonlinear metasurfaces
Abstract
In this Letter, we propose a tunable coherent perfect absorber based on ultrathin nonlinear metasurfaces. A nonlinear metasurface is made of plasmonic nanoantennas coupled to an epsilon-near-zero material with a large optical nonlinearity. The coherent perfect absorption is achieved by controlling the relative phases of the input beams. Here, we show that the optical response of the nonlinear metasurface can be tuned from a complete to a partial absorption by changing the intensity of the pump beam. The proposed nonlinear metasurface can be used to design optically tunable thermal emitters, modulators, and sensors.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 24, 2020
- Source ID
- 10.1364/ol.402380
Entities
People
- Rasoul Alaee
- Robert W. Boyd
- Yaswant Vaddi
Organizations
- Alexander von Humboldt Foundation
- Canada Excellence Research Chairs
- Canada First Research Excellence Fund
- Defense Advanced Research Projects Agency
- Natural Sciences and Engineering Research Council