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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201800278
|2 doi
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Fan, Kebin
|e verfasserin
|4 aut
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|a Phototunable Dielectric Huygens' Metasurfaces
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|c 2018
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 06.08.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a 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
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|a Journal Article
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|a Huygens' metasurfaces
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|a coupled mode theory
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|a dielectric metasurfaces
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|a eigenmodes
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|a tunable materials
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|a Zhang, Jingdi
|e verfasserin
|4 aut
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|a Liu, Xinyu
|e verfasserin
|4 aut
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|a Zhang, Gu-Feng
|e verfasserin
|4 aut
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|a Averitt, Richard D
|e verfasserin
|4 aut
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|a Padilla, Willie J
|e verfasserin
|4 aut
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 30(2018), 22 vom: 10. Mai, Seite e1800278
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:30
|g year:2018
|g number:22
|g day:10
|g month:05
|g pages:e1800278
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|u http://dx.doi.org/10.1002/adma.201800278
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