Geometrical optics in the near field: local plane-interface approach with evanescent waves

被引：2

作者：

Bose, Gaurav ^{[1
]}

Hyvarinen, Heikki J. ^{[2
]}

Tervo, Jani ^{[1
]}

Turunen, Jari ^{[1
]}

机构：

[1] Univ Eastern Finland, Inst Photon, FI-80101 Joensuu, Finland

[2] Nanocomp Oy Ltd, FI-80710 Lehmo, Finland

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 01期

基金：

芬兰科学院;

关键词：

BLAZED TRANSMISSION GRATINGS; APPROXIMATION; DIFFRACTION; ELEMENTS; DESIGN;

D O I：

10.1364/OE.23.000330

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show that geometrical models may provide useful information on light propagation in wavelength-scale structures even if evanescent fields are present. We apply a so-called local plane-wave and local plane-interface methods to study a geometry that resembles a scanning near-field microscope. We show that fair agreement between the geometrical approach and rigorous electromagnetic theory can be achieved in the case where evanescent waves are required to predict any transmission through the structure. (C) 2015 Optical Society of America

引用

页码：330 / 339

页数：10

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