Effects of interplay between metal subwavelength slits on extraordinary optical transmission

doi:10.1088/1674-1056/22/2/024201

中国物理B ›› 2013, Vol. 22 ›› Issue (2): 24201-024201.doi: 10.1088/1674-1056/22/2/024201

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Effects of interplay between metal subwavelength slits on extraordinary optical transmission

魏菲菲^a, 王怀玉^b, 周云松^a

a Department of Physics, Capital Normal University, Beijing 100037, China;
b Department of Physics, Tsinghua University, Beijing 100084, China

收稿日期:2012-07-16 修回日期:2012-08-29 出版日期:2013-01-01 发布日期:2013-01-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11074145, 10874124, and 61275028).

Effects of interplay between metal subwavelength slits on extraordinary optical transmission

Wei Fei-Fei (魏菲菲)^a, Wang Huai-Yu (王怀玉)^b, Zhou Yun-Song (周云松)^a

a Department of Physics, Capital Normal University, Beijing 100037, China;
b Department of Physics, Tsinghua University, Beijing 100084, China

Received:2012-07-16 Revised:2012-08-29 Online:2013-01-01 Published:2013-01-01
Contact: Wang Huai-Yu, Zhou Yun-Song E-mail:wanghuaiyu@mail.tsinghua.edu.cn; 263zys@263.net
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11074145, 10874124, and 61275028).

摘要/Abstract

摘要： In this paper we study the extraordinary optical transmission of one-dimensional multi-slit in an ideal metal film. The transmissivity is calculated as a function of various structural parameters. The transmissivity oscillates, with the period being just the light wavelength, as a function of the spacing between slits. As the number of slits increases, the transmissivity varies in one of the three ways. It can increase, attenuate, or remain basically unchanged, depending on the spacing between slits. Each way is in an oscillatory manner. The slit interaction responsible for the oscillating transmission strength that depends on slit spacing is the subject of more detailed investigation. The interaction most intuitively manifests as a current distribution in the metal surface between slits. We find that this current is attenuated in an oscillating fashion from the slit corners to the center of the region between two adjacent slits, and we present a mathematical expression for its waveform.

关键词: extraordinary optical transmission, metal subwavelength slits, interplay between slits

Abstract: In this paper we study the extraordinary optical transmission of one-dimensional multi-slit in an ideal metal film. The transmissivity is calculated as a function of various structural parameters. The transmissivity oscillates, with the period being just the light wavelength, as a function of the spacing between slits. As the number of slits increases, the transmissivity varies in one of the three ways. It can increase, attenuate, or remain basically unchanged, depending on the spacing between slits. Each way is in an oscillatory manner. The slit interaction responsible for the oscillating transmission strength that depends on slit spacing is the subject of more detailed investigation. The interaction most intuitively manifests as a current distribution in the metal surface between slits. We find that this current is attenuated in an oscillating fashion from the slit corners to the center of the region between two adjacent slits, and we present a mathematical expression for its waveform.

Key words: extraordinary optical transmission, metal subwavelength slits, interplay between slits

中图分类号: (Optical system design)

42.15.Eq

42.79.Dj (Gratings) 78.68.+m (Optical properties of surfaces)

魏菲菲, 王怀玉, 周云松. Effects of interplay between metal subwavelength slits on extraordinary optical transmission[J]. 中国物理B, 2013, 22(2): 24201-024201.

Wei Fei-Fei (魏菲菲), Wang Huai-Yu (王怀玉), Zhou Yun-Song (周云松). Effects of interplay between metal subwavelength slits on extraordinary optical transmission[J]. Chin. Phys. B, 2013, 22(2): 24201-024201.

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Effects of interplay between metal subwavelength slits on extraordinary optical transmission

Effects of interplay between metal subwavelength slits on extraordinary optical transmission

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