金属与量子点界面表面极化激元的ATR激发
ATR excitation of surface polaritons at the interface between a metal and a layer of nanocrystal quantum dots
摘要：
研究了由金属薄膜和一层或多层双金属（NC）量子点（QD）组成的多层结构中的表面等离子体激元。结果表明，沿金属/NC层界面传播的等离子体激元与量子点中的激子之间存在共振耦合，除非量子点尺寸的色散太大，否则对结构的光学性质有很大的影响.可以探索这种耦合，以便通过使用衰减全反射（ATR）结构来选择性地激发不同尺寸的QD。它开启了控制由不同尺寸的QD发射的不同颜色的光的相对强度的可能性。
英文摘要：
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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