Negative and Positive Impact of Roughness and Loss on Subwavelength Imaging for Superlens Structures
文献类型：期刊论文
| 作者 | Guo, Zhen; Huang, Qizhao; Wang, Changtao; Gao, Ping; Zhang, Wei; Zhao, Zeyu; Yan, Lianshan; Luo, Xiangang |
| 刊名 | PLASMONICS
 |
| 出版日期 | 2014 |
| 卷号 | 9期号:1页码:103-110 |
| ISSN号 | 1557-1955 |
| 通讯作者 | Luo, XG (reprint author), Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, POB 350, Chengdu 610209, Peoples R China. |
| 中文摘要 | We study on the negative and positive effect of surface roughness and loss coefficient on subwavelength imaging of the superlens structure. It has been found that even though surface roughness enables more transmission of high spatial frequency components, the random interferential noise between neighborhood images becomes more severe with increasing distortion. We show that additional loss is able to restrain the interferential noise caused by random roughness while preserving the imaging integrity. The results with practical parameters prove that the mean contrast and uniformity are improved by adding adequate loss on rough surface. Moreover, other two situations are further studied: (a) a single superlens with roughness on different interfaces and (b) a multilayered alternated metal-dielectric superlens with roughness on each surface. We found that the roughness on the imaging surface (metal-photoresist interface) plays a major role in determining the superlens imaging. The multilayer superlens is able to enhance the subwavelength imaging with fractionalized thinner films. But with the further fractionizing layers, the multilayer becomes more vulnerable to the roughness due to the multiple mixing and distorting. We still prove that additional loss is able to improve the performance in both situations. |
| 英文摘要 | We study on the negative and positive effect of surface roughness and loss coefficient on subwavelength imaging of the superlens structure. It has been found that even though surface roughness enables more transmission of high spatial frequency components, the random interferential noise between neighborhood images becomes more severe with increasing distortion. We show that additional loss is able to restrain the interferential noise caused by random roughness while preserving the imaging integrity. The results with practical parameters prove that the mean contrast and uniformity are improved by adding adequate loss on rough surface. Moreover, other two situations are further studied: (a) a single superlens with roughness on different interfaces and (b) a multilayered alternated metal-dielectric superlens with roughness on each surface. We found that the roughness on the imaging surface (metal-photoresist interface) plays a major role in determining the superlens imaging. The multilayer superlens is able to enhance the subwavelength imaging with fractionalized thinner films. But with the further fractionizing layers, the multilayer becomes more vulnerable to the roughness due to the multiple mixing and distorting. We still prove that additional loss is able to improve the performance in both situations. |
| 学科主题 | Subwavelength structures; Surface roughness; Loss; Multilayer |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000330995700012 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/6845]  |
| 专题 | 光电技术研究所_微细加工光学技术国家重点实验室（开放室） |
| 作者单位 | 1.[Guo, Zhen 2.Yan, Lianshan] Southwest Jiaotong Univ, Ctr Informat Photon Commun, Chengdu 610031, Peoples R China 3.[Guo, Zhen 4.Huang, Qizhao 5.Wang, Changtao 6.Gao, Ping 7.Zhang, Wei 8.Zhao, Zeyu 9.Luo, Xiangang] Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, Chengdu 610209, Peoples R China 10.[Huang, Qizhao] Univ Elect & Sci Technol China, Sch Mechatron Engn, Chengdu 611731, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Zhen,Huang, Qizhao,Wang, Changtao,et al. Negative and Positive Impact of Roughness and Loss on Subwavelength Imaging for Superlens Structures[J]. PLASMONICS,2014,9(1):103-110. |
| APA | Guo, Zhen.,Huang, Qizhao.,Wang, Changtao.,Gao, Ping.,Zhang, Wei.,...&Luo, Xiangang.(2014).Negative and Positive Impact of Roughness and Loss on Subwavelength Imaging for Superlens Structures.PLASMONICS,9(1),103-110. |
| MLA | Guo, Zhen,et al."Negative and Positive Impact of Roughness and Loss on Subwavelength Imaging for Superlens Structures".PLASMONICS 9.1(2014):103-110. |
入库方式： OAI收割
来源：光电技术研究所
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