Modulation of surface plasmon wave by photo-induced refractive index changes of CdSe quantum dots

Horng Shyang Chen; Jyh Yang Wang; Sheng Shiuan Yeh; Chii Dong Chen; Hung Yi Lin

doi:10.1063/1.3673560

Modulation of surface plasmon wave by photo-induced refractive index changes of CdSe quantum dots

Horng Shyang Chen^*, Jyh Yang Wang, Sheng Shiuan Yeh, Chii Dong Chen, Hung Yi Lin

^*Corresponding author for this work

International College of Semiconductor Technology

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

4 Scopus citations

Abstract

We demonstrate an all-optical modulation of surface plasmon resonance by photo-irradiation induced dielectric constant change of CdSe quantum dots on the gold surface. The dipole-dipole interaction between the surface plasmon and the photo-induced excitons in the dots gives rise to a shift in the surface plasmon resonance peak. This shift is found to sensitively reflect a tiny change in the dielectric constant, which is useful for investigating the nonlinear effect in active plasmonic components.

Original language	English
Article number	011102
Journal	Applied Physics Letters
Volume	100
Issue number	1
DOIs	https://doi.org/10.1063/1.3673560
State	Published - 2 Jan 2012

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abstract = "We demonstrate an all-optical modulation of surface plasmon resonance by photo-irradiation induced dielectric constant change of CdSe quantum dots on the gold surface. The dipole-dipole interaction between the surface plasmon and the photo-induced excitons in the dots gives rise to a shift in the surface plasmon resonance peak. This shift is found to sensitively reflect a tiny change in the dielectric constant, which is useful for investigating the nonlinear effect in active plasmonic components.",

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AU - Wang, Jyh Yang

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AU - Chen, Chii Dong

AU - Lin, Hung Yi

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N2 - We demonstrate an all-optical modulation of surface plasmon resonance by photo-irradiation induced dielectric constant change of CdSe quantum dots on the gold surface. The dipole-dipole interaction between the surface plasmon and the photo-induced excitons in the dots gives rise to a shift in the surface plasmon resonance peak. This shift is found to sensitively reflect a tiny change in the dielectric constant, which is useful for investigating the nonlinear effect in active plasmonic components.

AB - We demonstrate an all-optical modulation of surface plasmon resonance by photo-irradiation induced dielectric constant change of CdSe quantum dots on the gold surface. The dipole-dipole interaction between the surface plasmon and the photo-induced excitons in the dots gives rise to a shift in the surface plasmon resonance peak. This shift is found to sensitively reflect a tiny change in the dielectric constant, which is useful for investigating the nonlinear effect in active plasmonic components.

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Modulation of surface plasmon wave by photo-induced refractive index changes of CdSe quantum dots

Abstract

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