Electro-optic effect and optical rectification in gold nanoparticles immobilized above a gold surface

Yuichi Uchiho, Masayuki Shimojo, Kotaro Kajikawa

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Second-order nonlinear optical effects, a linear electro-optic (EO) effect and optical rectification (OR), were observed in surface immobilized gold nanospheres (SIGNs) above a gold surface with a gap of about 1.4 nm. The EO and OR measurements were performed in an attenuated total reflection geometry under a surface plasmon resonance condition. While it has been reported that the SIGN structure shows considerable second-harmonic generation activity, there has been no report on a linear EO effect and OR in the SIGN structure. The effective second-order susceptibilities of a single SIGN structure were evaluated to be 13 pm V-1 (EO) and 40 pmV-1 (OR). Although the theory predicts that the susceptibilities of EO and OR will be equal, the observed susceptibilities were different. The reasons for this discrepancy are discussed.

Original languageEnglish
Article number495101
JournalJournal of Physics D: Applied Physics
Volume43
Issue number49
DOIs
Publication statusPublished - 2010 Dec 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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