Waveguide properties of single subwavelength holes demonstrated with radially and azimuthally polarized light
Waveguide properties of single subwavelength holes demonstrated with radially and azimuthally polarized light
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DOI：
10.1007/s00340-007-2874-5
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发表时间：
2007-12-01
影响因子：
2.1
通讯作者：
Leuchs, G.
中科院分区：
文献类型：
--
作者：
Kindler, J.;Banzer, P.;Leuchs, G.
研究了聚焦光束通过银膜中单个亚波长孔的传输。我们使用径向和方位角偏振光激发高阶波导模式，以及匹配孔径几何形状的径向对称性。值得注意的是，传输特性可以通过经典的波导模型来描述，甚至对于薄至四分之一波长的银膜的厚度。
We investigate the transmission of focused beams through single subwavelength holes in a silver film. We use radially and azimuthally polarized light to excite higher-order waveguide modes as well as to match the radial symmetry of the aperture geometry. Remarkably, the transmission properties can be described by a classical waveguide model even for thicknesses of the silver film as thin as a quarter of a wavelength.