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Applied Physics Letters / Volume 96 / Issue 26 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 96, 263103 (2010); http://dx.doi.org/10.1063/1.3458693 (3 pages)

Anisotropic and enhanced absorptive nonlinearities in a macroscopic film induced by aligned gold nanorods

Jiafang Li, Siyun Liu, Ye Liu, Fei Zhou, and Zhi-Yuan Li

Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China

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(Received 12 May 2010; accepted 8 June 2010; published online 29 June 2010)

Anisotropic and enhanced nonlinear absorption (NLA) has been observed from aligned gold nanorods (GNRs) embedded in a poly(vinyl alcohol) film, which was realized by a stretched-film method. Open-aperture Z-scan experiments revealed that the stretch process enhanced the NLA coefficient by approximately nine times and increased the anisotropic factor of NLA to ∼ 20. The enhancement in the NLA coefficient reached as high as ∼ 91 times after increasing the concentration of GNRs by four times and this is attributed to the plasmonic interaction between densely packed GNRs.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

gold, nanorods, photoluminescence, plasmonics, surface plasmon resonance

PACS

  • 78.67.Qa

    Nanorods

  • 78.55.Hx

    Other solid inorganic materials

  • 73.20.Mf

    Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)

  • 73.22.Lp

    Collective excitations

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3458693

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    A. Bouhelier, R. Bachelot, G. Lerondel, S. Kostcheev, P. Royer, and G. P. Wiederrecht, Phys. Rev. Lett. 95, 267405 (2005).

    M. Pelton, M. Z. Liu, S. Park, N. F. Scherer, and P. Guyot-Sionnest, Phys. Rev. B 73, 155419 (2006).

    H. I. Elim, J. Yang, J. Y. Lee, J. Mi, and W. Ji, Appl. Phys. Lett. 88, 083107 (2006)APPLAB000088000008083107000001.


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