Spatial filtering by using cascading plasmonic gratings

Chih Ming Wang, Yia Chung Chang, Din Ping Tsai

研究成果: 雜誌貢獻期刊論文同行評審

7 引文 斯高帕斯(Scopus)

摘要

In this study, the optical properties of a plasmonic multilayer structure, consisting of tw6o longitudinally cascaded gratings with a half pitch off-set, are investigated. The proposed structure, which is a system mixing extended and localized surface plasmon, forms transversely cascaded metal/insulator/metal cavities. The angle dependent reflection spectrum of the proposed structure displays a resonance peak at a specific angle. The full-width at half maximum (FWHM) of the resonant peak is smaller than 3o. The angular dispersion of the cascading plamonic gratings is about d?/d=0.15o/nm. The cascading plasmonic gratings can be used as a spatial filter to improve the spatial coherence of a light source.

原文???core.languages.en_GB???
頁(從 - 到)6218-6223
頁數6
期刊Optics Express
17
發行號8
DOIs
出版狀態已出版 - 13 4月 2009

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