Dresden 2011 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 42: Poster I: Progress in Micro- and Nanopatterning: Techniques and Applications (jointly with O); Spins in Organic Materials; Ion Interactions with Nano Scale Materials; Organic Electronics and Photovoltaics; Plasmonics and Nanophotonics (jointly with HL and O); High-k and Low-k Dielectrics (jointly with DF); Organic Thin Films; Nanoengineered Thin Films; Layer Deposition Processes; Layer Properties: Electrical, Optical, and Mechanical Properties; Thin Film Characterisation: Structure Analysis and Composition; Application of Thin Films
DS 42.115: Poster
Mittwoch, 16. März 2011, 15:00–17:30, P1
Theory of the Spatiotemporal Control of Optical Excitations in Metal Nanostructures — •Felix Schlosser1, Mario Schoth1, Sven Burger2, Frank Schmidt2, Andreas Knorr1, Shaul Mukamel3, and Marten Richter1, 3 — 1Institut für Theoretische Physik, Technische Universität Berlin, Germany — 2Zuse-Institut Berlin, Germany — 3Department of Chemistry, University of California, Irvine, USA
Spatiotemporal control of electronic excitations with subwavelength precision is a useful technique in modern experiments. It can be achieved by combination of pulse shaping techniques for ultrashort laser pulses with nanoplasmonics [1]. In order to describe the linear and nonlinear excitation and response of metal nanostructures on a fundamental level, a microscopic material model is combined with a Maxwell solver (JCMwave, Zuse-Institut Berlin) to simulate the spatiotemporal control caused by shaped pulses [2] including phase control optimized by a genetic algorithm. As a first application, we demonstrate that the precise control of excitations in coupled semiconductor quantum dots opens new possibilities for coherent spectroscopy: In particular, we discuss a double quantum coherence (DQC) method [3] enhanced by the additional spatial control, which will reveal more information about the delocalized excitonic wave functions in coupled nanostructures compared to DQC without spatial control.
[1] T. Brixner et al., Phys. Rev. B 73, 125437 (2006)
[2] M. Reichelt and T. Meier, Opt. Lett. 34, 2900-2902 (2009)
[3] L. Yang and S. Mukamel, Phys. Rev. Lett. 100, 057402 (2008)