The Optical Characteristics and Device Applications of Surface Plasmons
Date Issued
2006
Date
2006
Author(s)
Chuang, Tzu-Hung
DOI
en-US
Abstract
The band diagram of surface plasmons (SPs) on a periodic array of metal holes is investigated in theory and experiment. The extraordinary transmission of various sized holes in a squared array is measured to observe the different surface charge fields under the Bragg scattering of SPs. The dispersion relations of different aspect length to width ratio of rectangular holes are studied to show the interaction among local SPs and its mechanism. Furthermore, a periodic array of metal holes fabricated on the back of a quantum dot infrared photodetector is illustrated to narrow the detecting region of the photodetector. Besides, a remotely coupled surface plasmon (RCSP) is discovered in an Ag/SiO2/Si structure, and the coupling length is determined as well. In addition, a narrow bandwidth and high power infrared emitter are invented by heating the triple layer structure which consists of an SiO2 layer between two Ag films on a Si substrate. The top Ag layer is perforated by periodic holes. Finally, the features of RCSPs are still observable in this plasmonic thermal emitter.
Subjects
表面電漿子
異常穿透
熱輻射器
遠距耦合
surface plasmons
extraordinary transmission
thermal emitter
remotely coupled
Type
thesis
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