Optical resonance in a narrow slit in a thick metallic screen

被引：486

作者：

Takakura, Y ^{[1
]}

机构：

[1] Univ Louis Pasteur, ENSPS, LSIIT, GRTR, F-67400 Illkirch, France

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.86.5601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Interaction of TM-polarized waves with a subwavelength thick metallic slit has been analyzed. A Fabry-Perot-like behavior is reported. The resonance peaks, however, have very low magnitude and a systematic shift towards longer wavelengths is observed. The slit being narrow, this shift can be interpreted as the result of an aperture effect. Spectral transmission from a periodic array of such slits features the same peaks with a high increase in their magnitude, confirming that a grating acts as an amplifier of those resonances. Such a mechanism might explain the enhancement of the transmission observed in recent experiments [T.W. Ebbesen, H.J. Lezec, H.F Ghaemi, T.Thio, and P.A. Wolff, Nature (London) 391, 667 (1998)].

引用

页码：5601 / 5603

页数：3

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