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Electric and magnetic response in dielectric dark states for low loss subwavelength optical meta atoms

Journal Article · · Advanced Optical Materials
 [1];  [2];  [1];  [2];  [3]
  1. Iowa State Univ., Ames, IA (United States)
  2. Vanderbilt Univ., Nashville, TN (United States)
  3. Iowa State Univ., Ames, IA (United States); Inst. of Electronic Structure and Lasers (IESL), Crete (Greece)
Artificially created surfaces or metasurfaces, composed of appropriately shaped subwavelength structures, namely, meta-atoms, control light at subwavelength scales. Historically, metasurfaces have used radiating metallic resonators as subwavelength inclusions. However, while resonant optical metasurfaces made from metal have been sufficiently subwavelength in the propagation direction, they are too lossy for many applications. Metasurfaces made out of radiating dielectric resonators have been proposed to solve the loss problem, but are marginally subwavelength at optical frequencies. We designed subwavelength resonators made out of nonradiating dielectrics. The resonators are decorated with appropriately placed scatterers, resulting in a meta-atom with an engineered electromagnetic response. A metasurface that yields an electric response is fabricated, experimentally characterized, and a method to obtain a magnetic response at optical frequencies is theoretically demonstrated. In conclusion, this design methodology paves the way for metasurfaces that are simultaneously subwavelength and low loss.
Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1227396
Report Number(s):
IS-J--8815
Journal Information:
Advanced Optical Materials, Journal Name: Advanced Optical Materials Journal Issue: 10 Vol. 3; ISSN 2195-1071
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (14)

Magnetic Dipole Ordering in Resonant Dielectric Metasurfaces journal April 2020
Bound States in Continuum and Zero-Index Metamaterials: A Review preprint January 2020
All-dielectric metasurfaces with trapped modes: Group-theoretical description journal April 2019
Toroidal dipolar bound state in the continuum and antiferromagnetic in asymmetric metasurface journal December 2019
Metasurface Engineering through Bound States in the Continuum journal July 2019
Controlling high- Q trapped modes in polarization-insensitive all-dielectric metasurfaces journal February 2019
Asymmetric Metasurfaces with High- Q Resonances Governed by Bound States in the Continuum journal November 2018
Quality factor assessment of finite-size all-dielectric metasurfaces at the magnetic dipole resonance journal January 2018
Reflection compensation mediated by electric and magnetic resonances of all-dielectric metasurfaces [Invited] journal January 2017
High-quality trapped modes in all-dielectric metamaterials journal January 2018
High-quality trapped modes in all-dielectric metamaterials text January 2017
Controlling high-Q trapped modes in polarization-insensitive all-dielectric metasurfaces text January 2018
All-dielectric metasurfaces with trapped modes: group-theoretical description text January 2018
Metasurface engineering through bound states in the continuum text January 2019

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