| Resolution Ability and Surface Bright Spots of a Lossy Left-handed Material Slab |
| |
| 作者姓名： | 李超 李芳 |
| |
| 作者单位： | Institute of Electronics, Chinese Academy of Scienccs, Beijing 100080 |
| |
| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 60501018 and 60271027, and the National Basic Research Programme of China undor Grant No 2004CB719800. |
| |
| 摘 要： | The imaging quality of a lossy left-handed material （LHM） slab is studied. The exact solution is obtained for the interaction of a monochromatic source with a lossy LHM slab by Fourier integrals in wave number domain. It is found that a small amount of loss may have a strong suppression of the super-resolution ability. However, the resolution of a lossy slab can still be better than a conventional lens because the evanescent wave can still be partly restored if the loss is small enough. The localized field with large amplitude （surthce bright spots） near the interfaces of the slab is related to the resonance of the coupling between surface waves at the interfaces, The evanescent wave restoration and the surface bright spots are two relevant phenomena. The distance of the bright spots is close to the half of the resolution length.
|
| 关 键 词： | 分辨力 表面亮点 成像质量 损耗 单色源 固体物理学 |
| 收稿时间： | 2005-07-07 |
| 修稿时间： | 2005-07-07 |
Resolution Ability and Surface Bright Spots of a Lossy Left-handed Material Slab |
| |
| LI Chao, LI Fang.Resolution Ability and Surface Bright Spots of a Lossy Left-handed Material Slab[J].Chinese Physics Letters,2006,23(2):470-473. |
| |
| Authors: | LI Chao LI Fang |
| |
| Abstract: | |
| |
| Keywords: | |
| 本文献已被 维普 等数据库收录！ |
