无表面波辅助下光和物质通过纳米孔的增强传输
Enhanced Transmission of Light and Matter through Nanoapertures without Assistance of Surface Waves
摘要：
薄金属膜中的亚波长孔径阵列能够增强光和物质波的传输[例如，参见T.W. Ebbesen等人，Nature（London）391，667（1998）和E. Moreno等人，物理修订版信函95，170406（2005）]。这种现象依赖于表面电子或物质波的共振激发。我们展示了另一种机制，它提供了一个很大的传输增强，而不是通过耦合到表面波，但在远场区的衍射倏逝波的干涉。通过与最近公布的数据进行比较，验证了该机制。
英文摘要：
Subwavelength aperture arrays in thin metal films enable enhanced transmission of light and matter waves [for example, see T.W. Ebbesen et al., Nature (London) 391, 667 (1998) and E. Moreno et al., Phys. Rev. Lett. 95, 170406 (2005)]. The phenomenon relies on resonant excitation of the surface electron or matter waves. We show another mechanism that provides a great transmission enhancement not by coupling to the surface waves but by the interference of diffracted evanescent waves in the far-field zone. Verification of the mechanism is presented by comparison with recently published data.
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