ATR excitation of surface polaritons at the interface between a metal and a layer of nanocrystal quantum dots

Details ATR excitation of surface polaritons at the interface between a metal and a layer of nanocrystal quantum dots ATR excitation of surface polaritons at the interface between a metal and a layer of nanocrystal quantum dots

2011-02-11

arxiv.org/abs/1102.2320v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Surface plasmon-polaritons in a multilayer structure consisting of a metallic film and one or more layers of nanocrystal (NC) quantum dots (QDs) are studied. It is shown that there is resonance coupling between the plasmon-polaritons propagating along the metal/NC-layer interface and excitons confined in the dots, which makes a considerable effect on the optical properties of the structure unless the dispersion of the QD size is too large. This coupling can be explored in order to selectively excite QDs of different size by using an attenuated total reflection (ATR) structure. It opens the possibility of control of the relative intensity of light of different color, emitted by the QDs of different size.

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