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Title: Terahertz chiral metamaterials with giant and dynamically tunable optical activity

Abstract

We demonstrated giant optical activity using a chiral metamaterial composed of an array of conjugated bilayer metal structures. The chiral metamaterials were further integrated with photoactive inclusions to accomplish a wide tuning range of the optical activity through illumination with near-infrared light. The strong chirality observed in our metamaterials results in a negative refractive index, which can also be well controlled by the near-infrared optical excitation.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1053248
Report Number(s):
IS-J 7788
Journal ID: 1098-0121
DOE Contract Number:  
DE-AC02-07CH11358
Resource Type:
Journal Article
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 86; Journal Issue: 3
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Zhou, Jiangfeng, Chowdhury, Dibakar Roy, Zhao, Rongkuo, Azad, Abul K, Chen, Hou-Tong, Soukoulis, Costas M, Taylor, Antoinette J, O', and Hara, John F. Terahertz chiral metamaterials with giant and dynamically tunable optical activity. United States: N. p., 2012. Web. doi:10.1103/PhysRevB.86.035448.
Zhou, Jiangfeng, Chowdhury, Dibakar Roy, Zhao, Rongkuo, Azad, Abul K, Chen, Hou-Tong, Soukoulis, Costas M, Taylor, Antoinette J, O', & Hara, John F. Terahertz chiral metamaterials with giant and dynamically tunable optical activity. United States. doi:10.1103/PhysRevB.86.035448.
Zhou, Jiangfeng, Chowdhury, Dibakar Roy, Zhao, Rongkuo, Azad, Abul K, Chen, Hou-Tong, Soukoulis, Costas M, Taylor, Antoinette J, O', and Hara, John F. Fri . "Terahertz chiral metamaterials with giant and dynamically tunable optical activity". United States. doi:10.1103/PhysRevB.86.035448.
@article{osti_1053248,
title = {Terahertz chiral metamaterials with giant and dynamically tunable optical activity},
author = {Zhou, Jiangfeng and Chowdhury, Dibakar Roy and Zhao, Rongkuo and Azad, Abul K and Chen, Hou-Tong and Soukoulis, Costas M and Taylor, Antoinette J and O' and Hara, John F},
abstractNote = {We demonstrated giant optical activity using a chiral metamaterial composed of an array of conjugated bilayer metal structures. The chiral metamaterials were further integrated with photoactive inclusions to accomplish a wide tuning range of the optical activity through illumination with near-infrared light. The strong chirality observed in our metamaterials results in a negative refractive index, which can also be well controlled by the near-infrared optical excitation.},
doi = {10.1103/PhysRevB.86.035448},
journal = {Physical Review B},
number = 3,
volume = 86,
place = {United States},
year = {2012},
month = {7}
}