| Numerical Investigation of Surface Plasmons Associated Subwavelength Optical Single-Pass Effect |
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| 引用本文： | 闵长俊 王沛 焦小瑾 明海. Numerical Investigation of Surface Plasmons Associated Subwavelength Optical Single-Pass Effect[J]. 中国物理快报, 2007, 24(10): 2922-2925 |
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| 作者姓名： | 闵长俊 王沛 焦小瑾 明海 |
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| 作者单位： | Institute of Photonics, University of Science and Technology of China, Hefei 230026 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10474093, and the National Basic Research Programme of China under Grant No 2006CB302905. |
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| 摘 要： | Surface plasmons （SPs） associated optical single-pass effect has been investigated in novel subwavelength metallic structures, including single slit and grating structures. With influence of SPs, these metallic structures can enhance transmission in incident direction and suppress it in the opposite direction, exhibiting a single-pass effect. The finite difference time domain method is employed to study the influences of structure parameters on far-field transmission, near-field electric field distribution and extinction ratio of the single-pass transmission effect. A maximal extinction ratio of 47.83dB is achieved in the grating structure.
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| 关 键 词： | 光子学 一次通过效应 表面细胞 结构参数 |
| 收稿时间： | 2007-06-13 |
| 修稿时间： | 2007-06-13 |
Numerical Investigation of Surface Plasmons Associated Subwavelength Optical Single-Pass Effect |
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| MIN Chang-Jun,WANG Pei,JIAO Xiao-Jin,MING Hai. Numerical Investigation of Surface Plasmons Associated Subwavelength Optical Single-Pass Effect[J]. Chinese Physics Letters, 2007, 24(10): 2922-2925 |
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| Authors: | MIN Chang-Jun WANG Pei JIAO Xiao-Jin MING Hai |
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| Affiliation: | 1. Institute of Photonics, University of Science and Technology of China, Hefei 230026 |
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| Abstract: | Surface plasmons (SPs) associated optical single-pass effect has been investigated in novel subwavelength metallic structures, including single slit and grating structures. With influence of SPs, these metallic structures can enhance transmission in incident direction and suppress it in the opposite direction, exhibiting a single-pass effect. The finite difference time domain method is employed to study the influences of structure parameters on far-field transmission, near-field electric field distribution and extinction ratio of the single-pass transmission effect. A maximal extinction ratio of 47.83dBis achieved in the grating structure. |
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| Keywords: | 71.36.+c 73.20.Mf 78.66.Bz 42.25.Fx |
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