کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5430123 | 1508706 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Spectral scattering properties of a nanohole in a noble-metal film in the evanescent waves area Spectral scattering properties of a nanohole in a noble-metal film in the evanescent waves area](/preview/png/5430123.png)
The effect of enhanced optical transmission through subwavelength holes and their arrays is used for multiple practical applications especially in optical antennas and local biosensors design. This effect is usually considered under excitation of plane wave propagating at the normal direction to the screen surface. In this work the effect of extreme transmission through the hole in the evanescent wave's area is in focus. The discrete sources method has been applied to analyse the spectral characteristics of light scattered by a cylindrical nanohole in a noble-metal film on a prism surface. The influence of the wavelength, incident angle, film materials and hole's filling on the scattering characteristics has been investigated. A close correlation between the effect of extreme transmission and the surface plasmon resonances has been detected.
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 110, Issues 14â16, SeptemberâNovember 2009, Pages 1518-1525