Active Control of Plasmon-Exciton Coupling in MoS₂-Ag Hybrid Nanostructures

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• 作者：Shuai Zu ; Bowen Li ; Yongji Gong ; Ziwei Li ; Pulickel M. Ajayan and Zheyu Fang
• 刊名：Advanced Optical Materials
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：4
• 期：10
• 页码：1463-1469
• 全文大小：3379K
• ISSN：2195-1071

文摘

Optically-controllable plasmon–exciton coupling is achieved in MoS₂–Ag hybrid nanostructures, facilitated by a photoexcited exciton-induced modulation of MoS₂ dielectric function. The white light spectra of surface plasmon resonances are gradually red-shifted by increasing incident laser power. This spectroscopic tunability can be controlled by the near-field coupling strength and polarization state of light. It can also be selectively applied to control plasmonic dark modes.