Electromagnetic wave funneling through nano-gaps and nano-antennas

D. S. Kim, M. A. Seo, H. R. Park, J. S. Kyoung, J. W. Lee, O. K. Suwal, S. S. Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

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 10 12, 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.

Original languageEnglish (US)
Title of host publicationUltrafast Phenomena in Semiconductors and Nanostructure Materials XIII
DOIs
StatePublished - Jun 15 2009
EventUltrafast Phenomena in Semiconductors and Nanostructure Materials XIII - San Jose, CA, United States
Duration: Jan 25 2009Jan 29 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7214
ISSN (Print)0277-786X

Other

OtherUltrafast Phenomena in Semiconductors and Nanostructure Materials XIII
Country/TerritoryUnited States
CitySan Jose, CA
Period1/25/091/29/09

Keywords

  • Field enhancement
  • Nano structures
  • Spectroscopy

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