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Funnel-Shaped Arrays of Metal Nano-Cylinders for Nano-Focusing |
| ZHOU Xiu-Li1, FU Yong-Qi2, WANG Shi-Yong1, PENG An-Jin1, CAI Zhong-Heng1 |
| 1School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 6100542State Key Laboratory of Optical Technologies for Microfabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209 |
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| Cite this article: |
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ZHOU Xiu-Li, FU Yong-Qi, WANG Shi-Yong et al 2008 Chin. Phys. Lett. 25 3296-3299 |
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Abstract We analyse funnel-shaped arrays of metal nanocylinders that can be potentially used as waveguides for nano-focusing of light. The proposed structures consist of Ag nanocylinders with gradually changed radii and discrete spacing arranged like side-view funnels with different angles. Finite-difference and time-domain simulations demonstrate that the proposed structures with different spacings and funnel angles have versatile light propagation characteristics. These structures can focus the incident Gaussian light beam (200nm at its full width at half maximum) into beam sizes of 10nm, 15nm, and 20nm, respectively, which corresponds to the transmission efficiencies of 38%, 40%, and 80%.
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42.79.Dj
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Received: 11 February 2008
Published: 29 August 2008
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[1] Barnes W L, Dereux A and Ebbesen T W 2003 Nature 424 824
[2] Betzig E and Chichester R J 1993 Science 2621422
[3] Ebbesen T W et al 1998 Nature 391 667
[4] Wang B, Wang G P 2004 Appl. Phys. Lett. 853599
[5] Haes A J and Van Duyne R P 2004 Expert Rev. Mol.Diagn 4 527
[6] Betzig E and Trautman J K 1992 Science 257 189
[7] Mirkin C A 1999 Science 286 2095
[8] Koel B E and Requicha A A G 2003 Nat. Mater. 2229
[9] Stephen K G and Teobald K 2003 Phys. Rev. B 68045415
[10] Fu Y et al 2007 Appl. Phys. Lett. 91 061124
[11] Fu Y, Zhou W and Lennie L E N 2008 J. Opt. Soc. Am.A 25 238
[12] Fu Y, Zhou W, Lennie L E N, Du C and Luo X 2007 Appl. Phys. B 86 155
[13] Fu Y, Zhou W, Lennie L E N, Du C and Luo X 2007 Appl. Phys. B 86 61
[14] Li K, Li X, Mark I S and David J B 2005 Phys. Rev.B 71 115409
[15] Krenn J R et al 1999 Phys. Rev. Lett. 82 2590
[16] Weeber J C, Krenn J R, Dereux A, Lamprecht B, Lacroute Yand Goudonnet J P 2001 Phys. Rev. B 64 045411 |
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