| Summary: | 碩士 === 國立臺灣海洋大學 === 光電科學研究所 === 99 === Abstract
The goal of this thesis is to study the Goos-Hanchen shift of light incident on composite nanostructure surface. From theoretical calculations for incident light at the wavelength of 1150 nm, the Goos-Hanchen shift of light owns metallic behavior with an overall smaller metal volume fraction in the clustering case. In the experiments, we have mixed the silver nanoparticles with PDMS-gel and heated the mixture to solidify the sample. The position of reflected light beam from the sample can then be obtained via the signal of quadrant cell photoreceiver. The Goos-Hanchen shift was obtained as the difference between the p-wave position and the s-wave position. From Artmann’s formula, when increasing the wavelength of incident light, vector will become smaller and the Goos-Hanchen shift will become larger. From our experimental results, increasing of volume fraction of metal leads to decreasing in the Goos-Hanchen shift. Negative Goos-Hanchen shift in the order of μm can be observed in our study.
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