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Proceedings Paper

Electromagnetic wave funneling through nano-gaps and nano-antennas
Author(s): D. S. Kim; M. A. Seo; H. R. Park; J. S. Kyoung; J. W. Lee; O. K. Suwal; S. S. Choi
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Paper Abstract

We show that accumulation of charges at the metal edges via light-induced currents creates large horizontal electric field, which in effect attracts the incoming light. The enhanced field is fully propagating towards the far-field because no cut-off exists. With the amplitude enhancement in the range of 1,000, the intensity enhancement of 106, and the nonlinear enhancement of 1012, this structure can be an excellent launching pad for inducing broad-band nonlinearity, small signal detection in astronomy or biology, and for surface enhanced Raman scattering.

Paper Details

Date Published: 7 February 2009
PDF: 8 pages
Proc. SPIE 7214, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIII, 72140H (7 February 2009); doi: 10.1117/12.808857
Show Author Affiliations
D. S. Kim, Seoul National Univ. (Korea, Republic of)
M. A. Seo, Seoul National Univ. (Korea, Republic of)
H. R. Park, Seoul National Univ. (Korea, Republic of)
J. S. Kyoung, Seoul National Univ. (Korea, Republic of)
J. W. Lee, Seoul National Univ. (Korea, Republic of)
O. K. Suwal, Sun Moon Univ. (Korea, Republic of)
S. S. Choi, Sun Moon Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 7214:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIII
Kong-Thon Tsen; Jin-Joo Song; Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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