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Park, Hyeong‐Ryeol
Laboratory for Ultrafast & Nanoscale Plasmonics
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Terahertz pinch harmonics enabled by single nano rods

Author(s)
Park, Hyeong-RyeolBahk, Young-MiChoe, Jong HoHan, SanghoonChoi, Seong SooAhn, Kwang JunPark, NamkyooPark, Q-HanKim, Dai-Sik
Issued Date
2011-11
DOI
10.1364/OE.19.024775
URI
https://scholarworks.unist.ac.kr/handle/201301/26334
Fulltext
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-19-24-24775
Citation
OPTICS EXPRESS, v.19, no.24, pp.24775 - 24781
Abstract
A pinch harmonic (or guitar harmonic) is a musical note produced by lightly pressing the thumb of the picking hand upon the string immediately after it is picked [J. Chem. Educ. 84, 1287 (2007)]. This technique turns off the fundamental and all overtones except those with a node at that location. Here we present a terahertz analogue of pinch harmonics, whereby a metallic nano rod placed at a harmonic node on a terahertz nanoresonator suppresses the fundamental mode, making the higher harmonics dominant. Strikingly, a skin depth-wide nano rod placed at the mid-point turns off all resonances. Our work demonstrates that terahertz electromagnetic waves can be tailored by nanoparticles strategically positioned, paving important path towards terahertz switching and detection applications.
Publisher
OPTICAL SOC AMER
ISSN
1094-4087
Keyword
ELECTROMAGNETICALLY INDUCED TRANSPARENCYNANOANTENNASMETAMATERIALSTRANSMISSIONANTENNASANALOGLIMIT

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