Controlling the Polarization State of Light with a Dispersion-Free Metastructure

Controlling the Polarization State of Light with a Dispersion-Free Metastructure

By combining the advantages of both a metallic metamaterial and a dielectric interlayer, we demonstrate the general mechanism to construct the dispersion-free metastructure, in which the intrinsic dispersion of the metallic structures is perfectly cancelled out by the thickness-dependent dispersion...

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Bibliographic Details
Published in:Physical review. X Vol. 4; no. 2; p. 021026
Main Authors: Jiang, Shang-Chi, Xiong, Xiang, Hu, Yuan-Sheng, Hu, Yu-Hui, Ma, Guo-Bin, Peng, Ru-Wen, Sun, Cheng, Wang, Mu
Format: Journal Article
Language:English
Published: College Park American Physical Society 01-05-2014
Subjects:
Broadband
Conductors
Dielectrics
Electric conductors
Frequency ranges
Incident light
Interlayers
Light
Metamaterials
Optical properties
Parameters
Poincare spheres
Polarization
Refractivity
Resonance
Silicon dioxide
Silver
Stability
Thickness
Wave dispersion
Wave plates
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Summary:By combining the advantages of both a metallic metamaterial and a dielectric interlayer, we demonstrate the general mechanism to construct the dispersion-free metastructure, in which the intrinsic dispersion of the metallic structures is perfectly cancelled out by the thickness-dependent dispersion of the dielectric spacing layer. As examples to apply this concept, a broadband quarter-wave plate and a half-wave plate are demonstrated. By selecting the structural parameters, the polarization state of light can be freely tuned across a broad frequency range, and all of the polarization states on the Poincaré sphere can be realized dispersion free.
ISSN:2160-3308
2160-3308
DOI:10.1103/PhysRevX.4.021026