Beaming light from a subwavelength metal slit surrounded by dielectric surface gratings

D. Z. Lin*, C. K. Chang, Yi-Chun Chen, D. L. Yang, M. W. Lin, J. T. Yeh, J. M. Liu, C. H. Kuan, C. S. Yeh, C. K. Lee

*Corresponding author for this work

研究成果: Article

89 引文 斯高帕斯(Scopus)

摘要

In this article, we demonstrate that a subwavelength metal slit surrounded by dielectric surface gratings possesses a directional beaming effect. We propose a surface plasmon diffraction scheme to explain the three kinds of beaming conditions. The numerical simulations of the illustrative structures undertaken used a Finite Difference Time Domain (FDTD) Method and a Rigorous Coupled Wave Analysis (RCWA) Method. Our simulations were found to be consistent and in agreement with the experimental results. In comparison with other metal structures, we find that dielectric metal structures offer better performance as well as the advantage of being able to be efficiently mass produced for large volume industrial applications.

原文English
頁(從 - 到)3503-3511
頁數9
期刊Optics Express
14
發行號8
DOIs
出版狀態Published - 17 四月 2006

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