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Proceedings Paper

Three-dimensional silica-gold core-shell photonic crystal: linear reflection and ultrafast nonlinear optical properties
Author(s): Dmitry A. Mazurenko; Alexander Moroz; Cristina M. Graf; Alfons van Blaaderen; Jaap I. Dijkhuis
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Paper Abstract

In this paper we analyze linear and ultrafast non-linear properties of a three-dimensional photonic crystal composed of close-packed SiO2/Au/SiO2 core-shell colloidal particles. Strong coupling between incident light and surface plasmon of spherical gold microcavities appears as sharp features in observed reflectivity spectra in the visible. In a single layer of gold-shell particles, a highly directional diffraction pattern was observed with hexagonal symmetry. The non-linear dynamics of the reflectivity has been studied by femtosecond white-light pump-probe experiments. Abrupt changes limited by the instrumental time resolution, were observed in time-resolved reflection spectra while the signal recovers in about 10 ps. Ultrafast changes in reflectivity reach values as high as 20%. The results are compared with theory.

Paper Details

Date Published: 15 September 2004
PDF: 9 pages
Proc. SPIE 5450, Photonic Crystal Materials and Nanostructures, (15 September 2004); doi: 10.1117/12.545864
Show Author Affiliations
Dmitry A. Mazurenko, Univ. Utrecht (Netherlands)
Alexander Moroz, Univ. Utrecht (Netherlands)
Cristina M. Graf, Univ. Utrecht (Netherlands)
Alfons van Blaaderen, Univ. Utrecht (Netherlands)
Jaap I. Dijkhuis, Univ. Utrecht (Netherlands)

Published in SPIE Proceedings Vol. 5450:
Photonic Crystal Materials and Nanostructures
Richard M. De La Rue; Pierre Viktorovitch; Clivia M. Sotomayor Torres; Michele Midrio, Editor(s)

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