Anisotropy in the nonlinear absorption of elongated silver nanoparticles in silica, probed by femtosecond pulses

R. Rangel-Rojo, John E McCarthy, H. T. Bookey, A. K. Kar, L. Rodriguez-Fernandez, J. C. Cheang-Wong, A. Crespo-Sosa, A. Lopez-Suarez, A. Oliver, V. Rodriguez-Iglesias, H. G. Silva-Pereyra

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Abstract

We present measurements of the anisotropy of the nonlinear absorption of a silica matrix doped with aligned spheroidal silver nanoparticles, produced by a double ion-implantation process of silver nanoparticles followed by an irradiation with Si ions. The nonlinear response was studied using the z-scan technique with fs pulses at 530 nm, which lies very close to the surface-plasmon absorption peak of the sample. The observed saturable absorption is studied for different angles of the input linear polarization of the pulses, showing a strong anisotropy, which is consistent with the fact that the nanorods are aligned. © 2009 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)1909-1912
Number of pages4
JournalOptics Communications
Volume282
Issue number9
DOIs
Publication statusPublished - 1 May 2009

Keywords

  • Nanoparticles
  • Nonlinear absorption
  • Surface-plasmon resonance

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    Rangel-Rojo, R., McCarthy, J. E., Bookey, H. T., Kar, A. K., Rodriguez-Fernandez, L., Cheang-Wong, J. C., Crespo-Sosa, A., Lopez-Suarez, A., Oliver, A., Rodriguez-Iglesias, V., & Silva-Pereyra, H. G. (2009). Anisotropy in the nonlinear absorption of elongated silver nanoparticles in silica, probed by femtosecond pulses. Optics Communications, 282(9), 1909-1912. https://doi.org/10.1016/j.optcom.2009.01.048