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Chin. Opt. Lett.
 Home  List of Issues    Issue 01 , Vol. 04 , 2006    Optical transmission enhancement by a sub-wavelength film lens

Optical transmission enhancement by a sub-wavelength film lens
Fei Zhou, Wendong Xu, Yang Wang, Fuxi Gan
[Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences], Shanghai 201800

Chin. Opt. Lett., 2006, 04(01): pp.52-54-3

Topic:Optical devices
Keywords(OCIS Code): 050.1220  210.0210  120.7000  350.6830  

A new sub-wavelength metallic film lens configuration is proposed, which is embedded in a thin ideal metal film, and its near field optical properties are investigated by finite-difference time-domain (FDTD) method. It is found that the optical transmission is greatly enhanced, and the spot size can be reduced by the sub-wavelength metallic film lens in comparison with the bare aperture. This kind of lens is expected to have practical applications in the very small aperture laser (VSAL), a promising nanosource for near-field optical storage and lithography.

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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Get Citation: Fei Zhou, Wendong Xu, Yang Wang, Fuxi Gan, "Optical transmission enhancement by a sub-wavelength film lens," Chin. Opt. Lett. 04(01), 52-54-3(2006)

Note: This work was supported by the Science and Technology Committee of Shanghai (No. 02ZF14109, 022261045, 03QG14057, and 0359NM003), the National Natural Science Foundation of China (No. 60207005), and the National "863" Project of China (No. 2002AA313030). F. Zhou's e-mail address is zhoufei@siom.ac.cn.


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