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

Yuichi Uchiho; Masayuki Shimojo; Kotaro Kajikawa

doi:10.1088/0022-3727/43/49/495101

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

Yuichi Uchiho, Masayuki Shimojo, Kotaro Kajikawa

Research output: Contribution to journal › Article › peer-review

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 language	English
Article number	495101
Journal	Journal of Physics D: Applied Physics
Volume	43
Issue number	49
DOIs	https://doi.org/10.1088/0022-3727/43/49/495101
Publication status	Published - 2010 Dec 15
Externally published	Yes

ASJC Scopus subject areas

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

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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.",

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AU - Shimojo, Masayuki

AU - Kajikawa, Kotaro

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

Abstract

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