Enhancing the Optical Excitation Efficiency of a Single Self-Assembled Quantum Dot with a Plasmonic Nanoantenna

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• 作者：Markus Pfeiffer ; Klas Lindfors ; Christian Wolpert ; Paola Atkinson ; Mohamed Benyoucef ; Armando Rastelli ; Oliver G. Schmidt ; Harald Giessen ; Markus Lippitz
• 刊名：Nano Letters
• 出版年：2010
• 出版时间：November 10, 2010
• 年：2010
• 卷：10
• 期：11
• 页码：4555-4558
• 全文大小：301K
• 年卷期：v.10,no.11(November 10, 2010)
• ISSN：1530-6992

文摘

We demonstrate how the controlled positioning of a plasmonic nanoparticle modifies the photoluminescence of a single epitaxial GaAs quantum dot. The antenna particle leads to an increase of the luminescence intensity by about a factor of 8. Spectrally and temporally resolved photoluminescence measurements prove an increase of the quantum dot’s excitation rate.

Keywords:

Nanoantenna; surface plasmon; epitaxial quantum dot; luminescence enhancement