Regensburg 2010 – wissenschaftliches Programm

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DF: Fachverband Dielektrische Festkörper

DF 15: Optical and nonlinear optical properties, photonics II

DF 15.1: Hauptvortrag

Donnerstag, 25. März 2010, 10:00–10:40, H11

Photons meet sound waves — •Jan K Krüger and Roland Sanctuary — University of Luxembourg, Laboratoire de physique des matériaux, Luxembourg, Luxembourg

High performance Brillouin spectroscopy is an optical method which is predominantly used for studies of the mechanical behaviour of condensed matter at hypersonic frequencies. Brillouin spectroscopy works contact- and destruction-less but needs rather transparent samples. The latter prerequisite is for soft matter no real restriction, especially, because the samples can be made thin. The typical probe volume is 10-8 cm3. After a short introduction to the theoretical background a description of the experimental technique will be given including an introduction to modern acoustic microscopy. The wide spectrum of useful applications of Brillouin spectroscopy will be demonstrated using examples from synthetic and biological polymers.