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Negative and Positive Impact of Roughness and Loss on Subwavelength Imaging for Superlens Structures
Guo, Zhen; Huang, Qizhao; Wang, Changtao; Gao, Ping; Zhang, Wei; Zhao, Zeyu; Yan, Lianshan; Luo, Xiangang; Luo, XG (reprint author), Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, POB 350, Chengdu 610209, Peoples R China.
Source PublicationPLASMONICS
Volume9Issue:1Pages:103-110
2014
Language英语
ISSN1557-1955
DOI10.1007/s11468-013-9602-2
Indexed BySCI
WOS IDWOS:000330995700012
Subtype期刊论文
AbstractWe 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.; 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.
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Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6845
Collection微细加工光学技术国家重点实验室(开放室)
Corresponding AuthorLuo, XG (reprint author), Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, POB 350, Chengdu 610209, Peoples R China.
Affiliation1.[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
Recommended Citation
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, XG .(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.
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