Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 66: Plasmonics and Nanooptics VI
O 66.6: Vortrag
Donnerstag, 17. März 2011, 12:30–12:45, WIL A317
Controlling two-photon excited luminescence in gold nanostructures with polarization pulse shaping — •Giovanni Piredda1, Zhimin Shi2, Caroline Gollub3, Regina de Vivie-Riedle1, and Achim Hartschuh1 — 1Physikalische Chemie, Department Chemie und Biochemie, Ludwig-Maximilians-Universität München — 2The Institute of Optics, University of Rochester, Rochester, NY 14620, USA — 3Institute for Materials Science, TU Dresden
Ultrafast nanooptics is an emerging field that combines the concepts and tools of ultrafast spectroscopy and coherent control with those of near-field optics [1]. A simple demonstration of coherent control is the ability to maximize the yield of nonlinear optical processes; we choose for our demonstration two-photon excited luminescence from gold nanostructures [2]. We compare optimization results in different nanostructures showing that the pulse characteristics that result in the highest luminescence yield depend on the single structure; control has therefore a local character. We also provide numerical simulations to support our experimental findings [3].
[1] M.I. Stockman, S.V. Faleev, and D.J. Bergman; Phys. Rev. Lett., 88, 067402 (2002).
[2] M.R. Beversluis, A. Bouhelier, and L. Novotny; Phys. Rev. B 68, 115433 (2003).
[3] G. Piredda, C. Gollub, R. de Vivie-Riedle, and A. Hartschuh; Appl. Phys. B-Lasers O., 100, 195 (2010).