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Applied Physics Letters / Volume 84 / Issue 23 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 84, 4684 (2004); http://dx.doi.org/10.1063/1.1760220 (3 pages)

Observation of resonant energy transfer in Au:CdS nanocomposite

G. H. Ma1, J. He1, K. Rajiv1, S. H. Tang1, Y. Yang2, and M. Nogami2

1Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore
2Department of Materials Science and Engineering, Nagoya Institute of Technology, Showa, Nagoya 466-8555, Japan

(Received 21 January 2004; accepted 14 April 2004; published online 19 May 2004)

Au:CdS nanocomposite film was investigated using femtosecond pump–probe measurement at 800 nm. Time dependence of transmittance shows a two-photon absorption followed by a saturable absorption and recovery process, which clearly demonstrates that resonant energy transfer between CdS and Au nanocomposite systems occur with excitation at 800 nm. In addition, enhancement of the two-photon absorption coefficient in Au:CdS nanocomposite with a factor of more than 6 was observed compared to that of bulk CdS. © 2004 American Institute of Physics.

© 2004 American Institute of Physics

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KEYWORDS and PACS

Keywords

nanocomposites, cadmium compounds, sulphur compounds, gold, light absorption, high-speed optical techniques

PACS

  • 81.07.Bc

    Nanocrystalline materials

  • 78.67.Bf

    Nanocrystals, nanoparticles, and nanoclusters

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.1760220

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.
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    T. D. Krauss and F. W. Wise, Appl. Phys. Lett. 65, 1739 (1994)APPLAB000065000014001739000001.


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