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2. 发明授权

US06285020B1 Enhanced optical transmission apparatus with improved inter-surface coupling 有权
标题翻译：具有改进的表面间耦合的增强型光传输装置
公开(公告)号：US06285020B1
公开(公告)日：2001-09-04
申请号：US09435132
申请日：1999-11-05
申请人： Tae Jin Kim , Ajit Krishnan , Tineke Thio , Henri Joseph Lezec , Thomas W. Ebbesen
发明人： Tae Jin Kim , Ajit Krishnan , Tineke Thio , Henri Joseph Lezec , Thomas W. Ebbesen
IPC分类号： H01J314
CPC分类号： G02B5/204 , G01Q60/22 , G01Q80/00 , G02B5/1866
摘要： An apparatus for enhanced light transmission through a perforated metal film is provided. The apparatus comprises a metal film having a first surface and a second surface, at least one aperture provided in the metal film and extending from the first surface to the second surface, and first and second dielectric layers. The first dielectric layer is provided substantially adjacent to the first metal film surface, and the second dielectric layer is provided substantially adjacent to the second metal film surface. The respective refractive indices of the first and second dielectric layers are substantially equal. Light incident on one of the surfaces of the metal film interacts with a surface plasmon mode on at least one of the surfaces of the metal film thereby enhancing transmission of light through the at least one aperture in the metal film. The apparatus may have a single aperture or a plurality of periodically arranged apertures, and the metal film surface may be provided with or without a periodic surface topography for further enhanced transmission. Wavelength-selective optical filters, spatial optical filters, light collectors, near-field scanning optical microscope probes and photolithographic masks are also provided.
摘要翻译：提供一种通过穿孔金属膜增强透光的装置。该装置包括具有第一表面和第二表面的金属膜，设置在金属膜中并且从第一表面延伸到第二表面的至少一个孔以及第一和第二介电层。第一电介质层基本上与第一金属膜表面相邻地设置，并且第二电介质层基本上邻近第二金属膜表面设置。第一和第二电介质层的相应折射率基本相等。入射到金属膜的一个表面上的光在金属膜的至少一个表面上与表面等离子体激元模式相互作用，从而增强透过金属膜中的至少一个孔的光的透过。该装置可以具有单个孔或多个周期性布置的孔，并且金属膜表面可以设置有或不具有周期性表面形貌以进一步增强透射。还提供了波长选择性滤光器，空间光学滤光器，光收集器，近场扫描光学显微镜探针和光刻掩模。

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