| Resonance Absorption of Metallic Plate with Subwavelength Hole Array |
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| 作者姓名： | 陈跃刚 王艳花 张岩 刘树田 |
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| 作者单位： | [1]Department of Physics, Harbin Institute of Technology, Harbin 150001 [2]Department of Physics, Capital Normal University, Beijing 100037 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10674038 and 10604042, and the National Basic Research Programme of China under Grant No 2006CB302901. To whom correspondence should be addressed. |
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| 摘 要： | The optical reflectance by a metallic plate arranged with array consisting of subwavelength periodic square hole is investigated by using the three-dimensional finite-difference time-domain method （3D-FDTD）. There are dips in the reflectivity spectra, which indicate the absorption peaks. The absorption peaks behave differently according to the ratio of hole width and the period of the hole array. Combined with the near fields of the absorption peaks, it is found that the surface plasmon （SP） resonance on the surface of plate and localized SP in the hole play a major role for the two absorptions.
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| 关 键 词： | 金属板 空学数组 谐振吸收 光学 |
| 收稿时间： | 2006-12-4 |
| 修稿时间： | 2006-12-04 |
Resonance Absorption of Metallic Plate with Subwavelength Hole Array |
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| CHEN Yue-Gang,WANG Yan-Hua,ZHANG Yan,LIU Shu-Tian.Resonance Absorption of Metallic Plate with Subwavelength Hole Array[J].Chinese Physics Letters,2007,24(4):1084-1087. |
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| Authors: | CHEN Yue-Gang WANG Yan-Hua ZHANG Yan LIU Shu-Tian |
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| Institution: | 1Department of Physics, Harbin Institute of Technology, Harbin 150001 ; 2Department of Physics, Capital Normal University, Beifing 100037 |
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| Abstract: | The optical reflectance by a metallic plate arranged with array consisting of subwavelength periodic square hole is investigated by using the three-dimensional finite-difference time-domain method (3D-FDTD). There are dips in the reflectivity spectra, which indicate the absorption peaks. The absorption peaks behave differently according to the ratio of hole width and the period of the hole array. Combined with the near fields of the absorption peaks, it is found that the surface plasmon (SP) resonance on the surface of plate and localized SP in the hole play a major role for the two absorptions. |
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| Keywords: | 78 66 Bz 41 20 Jb 78 20 Bh |
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