Spiral hyperlens with enhancements of image resolution and magnification

研究成果: Article

1 引文 (Scopus)

摘要

A subwavelength spiral hyperlens that is able to image beyond the diffraction limit is studied. The spiral hyperlens is made from an anisotropic metamaterial with a hyperbolic dispersion relation in which the evanescent wave is converted into a propagating wave. Therefore, the propagating wave can be processed by conventional optical systems outside of the spiral hyperlens. The possibility of using a cylindrical hyperlens for overcoming the diffraction limit has been proven analytically and experimentally. In this study, we designed two types of spiral hyperlenses composed of a spiral periodic stack of silver and alumina multilayers. A spiral hyperlens utilizes the spiral geometry to magnify the objects. In comparison with a cylindrical hyperlens, a spiral hyperlens has improved performance in terms of higher image resolution and better image magnifications. Numerical simulations illustrate that the far-field imaging resolution of cylindrical spiral hyperlens is no greater than 110 nm at 365 nm working wavelength.

原文English
頁(從 - 到)1029-1034
頁數6
期刊Journal of Modern Optics
63
發行號11
DOIs
出版狀態Published - 2016 六月 16

指紋

image resolution
magnification
augmentation
evanescent waves
diffraction
far fields
aluminum oxides
silver
high resolution
geometry

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

引用此文

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abstract = "A subwavelength spiral hyperlens that is able to image beyond the diffraction limit is studied. The spiral hyperlens is made from an anisotropic metamaterial with a hyperbolic dispersion relation in which the evanescent wave is converted into a propagating wave. Therefore, the propagating wave can be processed by conventional optical systems outside of the spiral hyperlens. The possibility of using a cylindrical hyperlens for overcoming the diffraction limit has been proven analytically and experimentally. In this study, we designed two types of spiral hyperlenses composed of a spiral periodic stack of silver and alumina multilayers. A spiral hyperlens utilizes the spiral geometry to magnify the objects. In comparison with a cylindrical hyperlens, a spiral hyperlens has improved performance in terms of higher image resolution and better image magnifications. Numerical simulations illustrate that the far-field imaging resolution of cylindrical spiral hyperlens is no greater than 110 nm at 365 nm working wavelength.",
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Spiral hyperlens with enhancements of image resolution and magnification. / Chen, Yi An; Chang, I-Ling; Chen, Lien-Wen.

於: Journal of Modern Optics, 卷 63, 編號 11, 16.06.2016, p. 1029-1034.

研究成果: Article

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