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Tailoring terahertz plasmons with silver nanorod arrays

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep01766· OSTI ID:1624613
 [1];  [2];  [2];  [3];  [4];  [2];  [2];  [4]
  1. Oklahoma State Univ., Stillwater, OK (United States). School of Electrical and Computer Engineering; DOE/OSTI
  2. Univ. of Georgia, Athens, GA (United States). Dept. of Physics and Astronomy
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). AOT-HPE
  4. Oklahoma State Univ., Stillwater, OK (United States). School of Electrical and Computer Engineering
Plasmonic materials that strongly interact with light are ideal candidates for designing subwavelength photonic devices. We report on direct coupling of terahertz waves in metallic nanorods by observing the resonant transmission of surface plasmon polariton waves through lithographically patterned films of silver nanorod (100 nm in diameter) micro-hole arrays. The best enhancement in surface plasmon resonant transmission is obtained when the nanorods are perfectly aligned with the electric field direction of the linearly polarized terahertz wave. This unique polarization-dependent propagation of surface plasmons in structures fabricated from nanorod films offers promising device applications. We conclude that the anisotropy of nanoscale metallic rod arrays imparts a material anisotropy relevant at the microscale that may be utilized for the fabrication of plasmonic and metamaterial based devices for operation at terahertz frequencies.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1624613
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 3; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

Soft and broadband infrared metamaterial absorber based on gold nanorod/liquid crystal hybrid with tunable total absorption journal November 2015
High-efficiency optical terahertz modulation of aligned Ag nanowires on a Si substrate journal March 2018

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