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Chin. Opt. Lett.
 Home  List of Issues    Issue 04 , Vol. 10 , 2012    10.3788/COL201210.042302


A hyperlens-based device for nanoscale focusing of light
Jiangnan Zhao, Guoxing Zheng, Song Li, Hui Zhou, Yue Ma, Ruiying Zhang, Yan Shi, Ping'an He
School of Electronics Information, [Wuhan University], Wuhan 430072, China

Chin. Opt. Lett., 2012, 10(04): pp.042302

DOI:10.3788/COL201210.042302
Topic:Optical devices
Keywords(OCIS Code): 230.0230  160.3918  220.3630  350.4238  

Abstract
To resolve the problem of missed evanescent waves in a beam focusing system, a hyperlens-based beam focusing device is proposed in this letter. This device can convert the evanescent waves into propagating waves, and then a super-resolution spot is formed at the center of the hyperlens. The working principle of the device is presented, and the way in which the material and structural parameters of the hyperlens affect the resolution and transmission is analyzed in detail. A multibeam focusing device is optimally designed, and the simulated results verify that a nanoscale spot with a diameter of 15.6 nm (corresponding to \lambda 0/24, where \lambda 0 is the working wavelength in vacuum) is achieved, which is far less than the diffraction limited resolution with a value of 625 nm (1.7\lambda 0). The device is expected to find numerous applications in optical data storage and nano{photolithography, among others.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Received:2011/8/18
Accepted:2011/10/8
Posted online:2011/11/25

Get Citation: Jiangnan Zhao, Guoxing Zheng, Song Li, Hui Zhou, Yue Ma, Ruiying Zhang, Yan Shi, Ping'an He, "A hyperlens-based device for nanoscale focusing of light," Chin. Opt. Lett. 10(04), 042302(2012)

Note: This work was supported by the National Natural Science Foundation of China (No. 10904118), the Natural Science Foundation of Hubei Province (No. 2009CDB211), and the Fundamental Research Funds for the Central Universities.



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