作者
Arif E Cetin, Mustafa Turkmen, Serap Aksu, Dordaneh Etezadi, Hatice Altug
发表日期
2015/1
期刊
Applied Physics B
卷号
118
页码范围
29-38
出版商
Springer Berlin Heidelberg
简介
We present a compact and multi-resonant aperture system supporting large local electromagnetic fields, which is highly advantageous for applications demanding high signal-to-noise ratio. The system is composed of subwavelength H-shaped apertures with extended arms fabricated through thin metal films on a free-standing dielectric membranes. Through finite-difference time-domain calculations, we numerically investigate the multi-resonant spectral nature of the compact system in detail, which is associated with the individual optical response of the constituting aperture elements. In order to realize the aperture systems working in the spectral region of interest, we introduce a fine-tuning mechanism of the optical responses through geometrical device parameters. Furthermore, we present a circuit analog of the system demonstrating the impedance characteristics of the plasmonic modes supported by the …
学术搜索中的文章
AE Cetin, M Turkmen, S Aksu, D Etezadi, H Altug - Applied Physics B, 2015