Third-order nonlinear optical response of Au-core CdS-shell composite nanoparticles embedded in BaTiO3 thin films

Y. Liu; D. Li; R. Y. Zhu; G. J. You; S. X. Qian; Y. Yang; J. L. Shi

doi:10.1007/s00340-002-1068-4

Third-order nonlinear optical response of Au-core CdS-shell composite nanoparticles embedded in BaTiO₃ thin films

Y. Liu
, D. Li
, R. Y. Zhu
, G. J. You
, S. X. Qian^*
, Y. Yang
, J. L. Shi

^*Corresponding author for this work

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

19 Scopus citations

Abstract

Au-core CdS-shell composite nanoparticles were synthesized by a direct self-assembly process and integrated into BaTiO₃ thin films. Characterization by transmission electron microscopy showed that the average diameter of these composite nanoparticles was about 8 nm. Using the femtosecond time resolved optical Kerr effect method, we investigated the third-order nonlinear optical response of the Au@CdS nanoparticles embedded in the BaTiO₃ thin films at a wavelength of 800 nm. An ultrafast nonlinear response and a large effective third-order nonlinear susceptibility of χX⁽³⁾ = 7.7 × 10^-11 esu were observed. We attributed the enhancement of the third-order optical nonlinearity to a localized electric field effect originating from the core-shell structure under off-surface-plasmon resonance conditions.

Original language	English
Pages (from-to)	435-439
Number of pages	5
Journal	Applied Physics B: Lasers and Optics
Volume	76
Issue number	4
DOIs	https://doi.org/10.1007/s00340-002-1068-4
State	Published - Apr 2003
Externally published	Yes

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title = "Third-order nonlinear optical response of Au-core CdS-shell composite nanoparticles embedded in BaTiO3 thin films",

abstract = "Au-core CdS-shell composite nanoparticles were synthesized by a direct self-assembly process and integrated into BaTiO3 thin films. Characterization by transmission electron microscopy showed that the average diameter of these composite nanoparticles was about 8 nm. Using the femtosecond time resolved optical Kerr effect method, we investigated the third-order nonlinear optical response of the Au@CdS nanoparticles embedded in the BaTiO3 thin films at a wavelength of 800 nm. An ultrafast nonlinear response and a large effective third-order nonlinear susceptibility of χX(3) = 7.7 × 10-11 esu were observed. We attributed the enhancement of the third-order optical nonlinearity to a localized electric field effect originating from the core-shell structure under off-surface-plasmon resonance conditions.",

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T1 - Third-order nonlinear optical response of Au-core CdS-shell composite nanoparticles embedded in BaTiO3 thin films

AU - Liu, Y.

AU - Li, D.

AU - Zhu, R. Y.

AU - You, G. J.

AU - Qian, S. X.

AU - Yang, Y.

AU - Shi, J. L.

PY - 2003/4

Y1 - 2003/4

N2 - Au-core CdS-shell composite nanoparticles were synthesized by a direct self-assembly process and integrated into BaTiO3 thin films. Characterization by transmission electron microscopy showed that the average diameter of these composite nanoparticles was about 8 nm. Using the femtosecond time resolved optical Kerr effect method, we investigated the third-order nonlinear optical response of the Au@CdS nanoparticles embedded in the BaTiO3 thin films at a wavelength of 800 nm. An ultrafast nonlinear response and a large effective third-order nonlinear susceptibility of χX(3) = 7.7 × 10-11 esu were observed. We attributed the enhancement of the third-order optical nonlinearity to a localized electric field effect originating from the core-shell structure under off-surface-plasmon resonance conditions.

AB - Au-core CdS-shell composite nanoparticles were synthesized by a direct self-assembly process and integrated into BaTiO3 thin films. Characterization by transmission electron microscopy showed that the average diameter of these composite nanoparticles was about 8 nm. Using the femtosecond time resolved optical Kerr effect method, we investigated the third-order nonlinear optical response of the Au@CdS nanoparticles embedded in the BaTiO3 thin films at a wavelength of 800 nm. An ultrafast nonlinear response and a large effective third-order nonlinear susceptibility of χX(3) = 7.7 × 10-11 esu were observed. We attributed the enhancement of the third-order optical nonlinearity to a localized electric field effect originating from the core-shell structure under off-surface-plasmon resonance conditions.

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DO - 10.1007/s00340-002-1068-4

M3 - 文章

AN - SCOPUS:0038046160

SN - 0946-2171

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JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

IS - 4

ER -

Third-order nonlinear optical response of Au-core CdS-shell composite nanoparticles embedded in BaTiO₃ thin films

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