Regensburg 2013 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 1: Tutorial: Coherent Control
HL 1.2: Tutorial
Sunday, March 10, 2013, 16:35–17:10, H2
Coherent control in ultrafast nano-optics — •Tobias Brixner1, Martin Aeschlimann2, and Walter Pfeiffer3 — 1Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg — 2Fachbereich Physik and Research Center OPTIMAS, Technische Universität Kaiserslautern, Erwin-Schrödinger-Str. 46, 67663 Kaiserslautern — 3Fakultät für Physik, Universität Bielefeld, Universitätsstr. 25, 33615 Bielefeld
Coherent control in general exploits the phase properties of light fields to manipulate coherent processes. While these concepts have initially been developed for molecular systems, it has recently become possible also to control nano-optical phenomena, i.e., the properties of electromagnetic fields below the diffraction limit of light. In this talk it will be shown how shaped femtosecond laser pulses can be used to achieve spatial and spatiotemporal control, and fundamental mechanisms will be illustrated [1]. Apart from closed-loop implementations using iterative learning algorithms, analytic schemes have been developed and realized experimentally. Applications of ultrafast nano-control also make possible novel nonlinear spectroscopy techniques.
[1] W. Pfeiffer, M. Aeschlimann, and T. Brixner, “Coherent control of nano-optical excitations,” in “Optical Antennas,” M. Agio and A. Alù, eds. (Cambridge University Press, 2013), Chapter 9.