標題: | Near-field spectroscopic properties of complementary gold nanostructures: applicability of Babinet's principle in the optical region |
作者: | Mizobata, Hidetoshi Ueno, Kosei Misawa, Hiroaki Okamoto, Hiromi Imura, Kohei 應用化學系 應用化學系分子科學碩博班 Department of Applied Chemistry Institute of Molecular science |
公開日期: | 6-三月-2017 |
摘要: | We examine the far-field and near-field properties of complementary screens made of nanostructured gold thin films, a rectangular nanowire and a nanovoid, using an aperture-type scanning near-field optical microscope and electromagnetic field calculations, and discuss the applicability of Babinet's principle in the optical region. The far-field transmission spectra of the complementary screens are considerably different from each other. On the other hand, genuine near-field extinction spectra exhibit nearly complementary characteristics. The spatial features of the observed near-field images for the complementary screens show little correlation. We have found from the Fourier analysis of the simulated images that high spatial-frequency components of the electromagnetic fields show mutual spatial correlation. These results suggest that Babinet's principle is applicable to the high spatial-frequency components of electromagnetic fields for the complementary screens. (C) 2017 Optical Society of America |
URI: | http://dx.doi.org/10.1364/OE.25.005279 http://hdl.handle.net/11536/144976 |
ISSN: | 1094-4087 |
DOI: | 10.1364/OE.25.005279 |
期刊: | OPTICS EXPRESS |
Volume: | 25 |
Issue: | 5 |
起始頁: | 5279 |
結束頁: | 5289 |
顯示於類別: | 期刊論文 |