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Title: Chiral Metamaterials: retrieval of the effective parameters with and without substrate

Abstract

After the prediction that strong enough optical activity may result in negative refraction and negative reflection, more and more artificial chiral metamaterials were designed and fabricated at difference frequency ranges from microwaves to optical waves. Therefore, a simple and robust method to retrieve the effective constitutive parameters for chiral metamaterials is urgently needed. Here, we analyze the wave propagation in chiral metamaterials and follow the regular retrieval procedure for ordinary metamaterials and apply it in chiral metamaterial slabs. Then based on the transfer matrix technique, the parameter retrieval is extended to treat samples with not only the substrate but also the top layers. After the parameter retrieval procedure, we take two examples to check our method and study how the substrate influences on the thin chiral metamaterials slabs. We find that the substrate may cause the homogeneous slab to be inhomogeneous, i.e. the reflections in forward and backward directions are different. However, the chiral metamaterial where the resonance element is embedded far away from the substrate is insensitive to the substrate.

Authors:
; ;
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1013885
Report Number(s):
IS-J 7560
Journal ID: 1094-4087; TRN: US201111%%40
DOE Contract Number:  
DE-AC02-07CH11358
Resource Type:
Journal Article
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 18; Journal Issue: 14
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; FORECASTING; FREQUENCY RANGE; OPTICAL ACTIVITY; REFLECTION; REFRACTION; RESONANCE; SUBSTRATES; WAVE PROPAGATION

Citation Formats

Zhao, Rongkuo, Koschny, Thomas, and Soukoulis, Costas M. Chiral Metamaterials: retrieval of the effective parameters with and without substrate. United States: N. p., 2010. Web. doi:10.1364/OE.18.014553.
Zhao, Rongkuo, Koschny, Thomas, & Soukoulis, Costas M. Chiral Metamaterials: retrieval of the effective parameters with and without substrate. United States. doi:10.1364/OE.18.014553.
Zhao, Rongkuo, Koschny, Thomas, and Soukoulis, Costas M. Wed . "Chiral Metamaterials: retrieval of the effective parameters with and without substrate". United States. doi:10.1364/OE.18.014553.
@article{osti_1013885,
title = {Chiral Metamaterials: retrieval of the effective parameters with and without substrate},
author = {Zhao, Rongkuo and Koschny, Thomas and Soukoulis, Costas M},
abstractNote = {After the prediction that strong enough optical activity may result in negative refraction and negative reflection, more and more artificial chiral metamaterials were designed and fabricated at difference frequency ranges from microwaves to optical waves. Therefore, a simple and robust method to retrieve the effective constitutive parameters for chiral metamaterials is urgently needed. Here, we analyze the wave propagation in chiral metamaterials and follow the regular retrieval procedure for ordinary metamaterials and apply it in chiral metamaterial slabs. Then based on the transfer matrix technique, the parameter retrieval is extended to treat samples with not only the substrate but also the top layers. After the parameter retrieval procedure, we take two examples to check our method and study how the substrate influences on the thin chiral metamaterials slabs. We find that the substrate may cause the homogeneous slab to be inhomogeneous, i.e. the reflections in forward and backward directions are different. However, the chiral metamaterial where the resonance element is embedded far away from the substrate is insensitive to the substrate.},
doi = {10.1364/OE.18.014553},
journal = {Optics Express},
number = 14,
volume = 18,
place = {United States},
year = {2010},
month = {6}
}