DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Phototunable Dielectric Huygens' Metasurfaces

Journal Article · · Advanced Materials
 [1];  [2];  [1];  [2];  [2]; ORCiD logo [1]
  1. Department of Electrical and Computer Engineering Duke University Box 90291 Durham NC 27708 USA
  2. Department of Physics The University of California at San Diego La Jolla CA 92093 USA

Abstract Conventional dielectric metasurfaces achieve their properties through geometrical tuning and consequently are static. Although some unique properties are demonstrated, the usefulness for realistic applications is thus inherently limited. Here, control of the resonant eigenmodes supported by Huygens' metasurface (HMS) absorbers through optical excitation is proposed and demonstrated. An intensity transmission modulation depth of 99.93% is demonstrated at 1.03 THz, with an associated phase change of greater than π/2 rad. Coupled mode theory and S‐parameter simulations are used to elucidate the mechanism underlying the dynamics of the metasurface and it is found that the tuning is primarily governed by modification of the magnetic dipole‐like odd eigenmode, which both lifts the degeneracy, and eliminates critical coupling. The dynamic HMS demonstrates wide tunability and versatility which is not limited to the spectral range demonstrated, offering a new path for reconfigurable metasurface applications.

Sponsoring Organization:
USDOE
Grant/Contract Number:
DE‐SC0014372
OSTI ID:
1432591
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Vol. 30 Journal Issue: 22; ISSN 0935-9648
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 73 works
Citation information provided by
Web of Science

References (24)

Experimental realization of a terahertz all-dielectric metasurface absorber journal January 2017
Effect of local field enhancement on the nonlinear terahertz response of a silicon-based metamaterial journal November 2013
Tailor the Functionalities of Metasurfaces Based on a Complete Phase Diagram journal December 2015
Carrier lifetime versus ion‐implantation dose in silicon on sapphire journal February 1987
First-principles simulation of electron mean-free-path spectra and thermoelectric properties in silicon journal March 2015
Optical modulation of terahertz pulses in a parallel plate waveguide journal January 2008
High-Efficiency Dielectric Huygens’ Surfaces journal February 2015
Dielectric gradient metasurface optical elements journal July 2014
Planar, flattened Luneburg lens at infrared wavelengths journal January 2012
Dielectric metasurfaces for complete control of phase and polarization with subwavelength spatial resolution and high transmission journal August 2015
Carrier dynamics in semiconductors studied with time-resolved terahertz spectroscopy journal June 2011
All-dielectric metasurface absorbers for uncooled terahertz imaging journal January 2017
Metalenses at visible wavelengths: Diffraction-limited focusing and subwavelength resolution imaging journal June 2016
Temporal coupled-mode theory for light scattering by an arbitrarily shaped object supporting a single resonance journal April 2012
Planar metasurface retroreflector journal June 2017
Degenerate critical coupling in all-dielectric metasurface absorbers journal January 2017
Generation of dense electron-hole plasmas in silicon journal January 2000
High-Efficiency All-Dielectric Metasurfaces for Ultracompact Beam Manipulation in Transmission Mode journal August 2015
An integrated-nanophotonics polarization beamsplitter with 2.4 × 2.4 μm2 footprint journal May 2015
Nature of Conduction in Doped Silicon journal February 1997
Terahertz single pixel imaging with an optically controlled dynamic spatial light modulator journal January 2013
Transport properties of silicon journal August 1991
Low-loss polymers for terahertz applications journal January 2008
Femtosecond pump-probe reflectivity study of silicon carrier dynamics journal October 2002