Enhanced and confined light transmission through a funnel-type aperture with a sub-wavelength outlet
| Autor: | Zu-Bin Li, Chun-Ping Zhang, Wen-Yuan Zhou, Wei-Ping Zang, Jian-Guo Tian |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Materials science
business.product_category Aperture business.industry Near-field optics Physics::Optics Extraordinary optical transmission Dielectric Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Angular aperture Optics Transmission (telecommunications) Physics::Accelerator Physics Light emission Funnel Electrical and Electronic Engineering Physical and Theoretical Chemistry business |
| Zdroj: | Optics Communications. 281:2321-2325 |
| ISSN: | 0030-4018 |
| Popis: | Enhanced transmission through sub-wavelength hole arrays and a single sub-wavelength aperture with periodic corrugations surrounded have been investigated extensively. We report the similar phenomenon through a funnel-type aperture with a sub-wavelength outlet in a thick silver film, which was obtained numerically by using finite-difference time-domain method. Properties of the transmission spectrum can be modulated by geometric parameters of the funnel-type aperture. With periodic grooves or dielectric gratings on the output surface of the structure, beaming light emission can be obtained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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