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题名:
Sub-diffraction-limited magnified Talbot imaging in cylindrical metamaterial
作者: Fang, Liang; Yao, Na; Pu, Mingbo; Wang, Changtao; Luo, Xiangang
刊名: Applied Physics A: Materials Science and Processing
出版日期: 2015
卷号: 118, 期号:4, 页码:1543-1549
学科分类: Metamaterials - Multilayers - Permittivity
DOI: 10.1007/s00339-014-8939-5
通讯作者: Luo, Xiangang
文章类型: 期刊论文
中文摘要: 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.
英文摘要: 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.
收录类别: SCI ; Ei
项目资助者: 973 Program of China [2013CBA01700] ; Chinese Nature Science Grant [61138002, 61177013]
语种: 英语
WOS记录号: WOS:000349598000047
ISSN号: 0947-8396
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6893
Appears in Collections:微细加工光学技术国家重点实验室(开放室)_期刊论文

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作者单位: 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:
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.
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