期刊
OPTICS EXPRESS
卷 16, 期 5, 页码 3049-3057出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.16.003049
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资金
- National Research Foundation of Korea [R16-2007-030-01001-0, 과06A1604] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We have investigated the focusing properties of surface plasmon polariton floating dielectric lenses. An analysis of the scattering characteristics of surface plasmon polaritons using a floating dielectric block shows that the air-gap thickness between a floating dielectric block and a metal substrate can be an effective dynamic variable for modulating the amplitude and phase of the transmission coefficient of the surface plasmon polaritons. This property can be used to realize a variable-focusing surface plasmon dielectric lens with the air-gap thickness as the dynamic variable. The focusing properties of a Fresnel lens and a parabolic lens with respect to the air-gap thickness are compared and analyzed. (C) 2008 Optical Society of America.
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