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Sub-diffraction-limited magnified Talbot imaging in cylindrical metamaterial
Fang, Liang; Yao, Na; Pu, Mingbo; Wang, Changtao; Luo, Xiangang
Source PublicationApplied Physics A: Materials Science and Processing
Volume118Issue:4Pages:1543-1549
2015
Language英语
ISSN0947-8396
DOI10.1007/s00339-014-8939-5
Indexed BySCI ; Ei
WOS IDWOS:000349598000047
Subtype期刊论文
AbstractWe numerically demonstrated the sub-diffraction-limited magnified Talbot imaging in a metamaterial composed of cylindrical stacked metal/dielectric multilayer. It was found that the magnified Talbot imaging could occur without the requirement of the metal/dielectric permittivity matching condition as satisfied in the hyperlens. Specifically, in this work, a practical realization of the magnified Talbot imaging was performed by Ag/Al2O3 multilayer stack at the wavelength of 337 nm. Unlike the traditional Talbot effect, the Talbot length in this case is not a constant but a variable and the variable Talbot length can be predicted roughly by ray optics approach. The contrast of the magnified Talbot imaging is decided by both the imaginary part and the real part in permittivity of the metamaterial. In order to obtain a deep sub-wavelength magnified Talbot image at the outer surface of the cylindrical metamaterial, the outer cylindrical radius should be optimized and the imaginary part in the permittivity should be small enough. © 2015, Springer-Verlag Berlin Heidelberg.; We numerically demonstrated the sub-diffraction-limited magnified Talbot imaging in a metamaterial composed of cylindrical stacked metal/dielectric multilayer. It was found that the magnified Talbot imaging could occur without the requirement of the metal/dielectric permittivity matching condition as satisfied in the hyperlens. Specifically, in this work, a practical realization of the magnified Talbot imaging was performed by Ag/Al2O3 multilayer stack at the wavelength of 337 nm. Unlike the traditional Talbot effect, the Talbot length in this case is not a constant but a variable and the variable Talbot length can be predicted roughly by ray optics approach. The contrast of the magnified Talbot imaging is decided by both the imaginary part and the real part in permittivity of the metamaterial. In order to obtain a deep sub-wavelength magnified Talbot image at the outer surface of the cylindrical metamaterial, the outer cylindrical radius should be optimized and the imaginary part in the permittivity should be small enough. © 2015, Springer-Verlag Berlin Heidelberg.
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6893
Collection微细加工光学技术国家重点实验室(开放室)
Corresponding AuthorLuo, Xiangang
Affiliation State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Chengdu, China
Recommended Citation
GB/T 7714
Fang, Liang,Yao, Na,Pu, Mingbo,et al. Sub-diffraction-limited magnified Talbot imaging in cylindrical metamaterial[J]. Applied Physics A: Materials Science and Processing,2015,118(4):1543-1549.
APA Fang, Liang,Yao, Na,Pu, Mingbo,Wang, Changtao,&Luo, Xiangang.(2015).Sub-diffraction-limited magnified Talbot imaging in cylindrical metamaterial.Applied Physics A: Materials Science and Processing,118(4),1543-1549.
MLA Fang, Liang,et al."Sub-diffraction-limited magnified Talbot imaging in cylindrical metamaterial".Applied Physics A: Materials Science and Processing 118.4(2015):1543-1549.
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