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Title: Resonance coupling and polarization conversion in terahertz metasurfaces with twisted split-ring resonator pairs

Abstract

Here, we investigate edge-coupling of twisted split-ring resonator (SRR) pairs in the terahertz (THz) frequency range. By using a simple coupled-resonator model we show that such a system exhibits resonance splitting and cross-polarization conversion. Numerical simulations and experimental measurements agree well with theoretical calculations, verifying the resonance splitting as a function of the coupling strength given by the SRR separation. We further show that a metal ground plane can be integrated to significantly enhance the resonance coupling, which enables the effective control of resonance splitting and the efficiency and bandwidth of the cross-polarization conversion. Our findings improve the fundamental understanding of metamaterials with a view of accomplishing metamaterial functionalities with enhanced performance, which is of great interest in realizing THz functional devices required in a variety of applications.

Authors:
; ORCiD logo; ; ; ORCiD logo
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE; National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1398836
Alternate Identifier(s):
OSTI ID: 1406233
Report Number(s):
LA-UR-17-27850
Journal ID: ISSN 1094-4087; OPEXFF
Grant/Contract Number:  
AC52-06NA25396; 11574219
Resource Type:
Published Article
Journal Name:
Optics Express
Additional Journal Information:
Journal Name: Optics Express Journal Volume: 25 Journal Issue: 21; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Li, Chenyu, Chang, Chun-Chieh, Zhou, Qingli, Zhang, Cunlin, and Chen, Hou-Tong. Resonance coupling and polarization conversion in terahertz metasurfaces with twisted split-ring resonator pairs. United States: N. p., 2017. Web. https://doi.org/10.1364/OE.25.025842.
Li, Chenyu, Chang, Chun-Chieh, Zhou, Qingli, Zhang, Cunlin, & Chen, Hou-Tong. Resonance coupling and polarization conversion in terahertz metasurfaces with twisted split-ring resonator pairs. United States. https://doi.org/10.1364/OE.25.025842
Li, Chenyu, Chang, Chun-Chieh, Zhou, Qingli, Zhang, Cunlin, and Chen, Hou-Tong. Tue . "Resonance coupling and polarization conversion in terahertz metasurfaces with twisted split-ring resonator pairs". United States. https://doi.org/10.1364/OE.25.025842.
@article{osti_1398836,
title = {Resonance coupling and polarization conversion in terahertz metasurfaces with twisted split-ring resonator pairs},
author = {Li, Chenyu and Chang, Chun-Chieh and Zhou, Qingli and Zhang, Cunlin and Chen, Hou-Tong},
abstractNote = {Here, we investigate edge-coupling of twisted split-ring resonator (SRR) pairs in the terahertz (THz) frequency range. By using a simple coupled-resonator model we show that such a system exhibits resonance splitting and cross-polarization conversion. Numerical simulations and experimental measurements agree well with theoretical calculations, verifying the resonance splitting as a function of the coupling strength given by the SRR separation. We further show that a metal ground plane can be integrated to significantly enhance the resonance coupling, which enables the effective control of resonance splitting and the efficiency and bandwidth of the cross-polarization conversion. Our findings improve the fundamental understanding of metamaterials with a view of accomplishing metamaterial functionalities with enhanced performance, which is of great interest in realizing THz functional devices required in a variety of applications.},
doi = {10.1364/OE.25.025842},
journal = {Optics Express},
number = 21,
volume = 25,
place = {United States},
year = {2017},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1364/OE.25.025842

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Cited by: 4 works
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