Spectroscopie optique : les vibrations et les phonons
Université Bordeaux 1, UMR CNRS 5255, ISM, Groupe Spectroscopie Moléculaire, 351 cours de la Libération, 33405 Talence Cedex, France
The aim of this course is to introduce some basic concepts of Raman and infrared spectroscopic techniques. In a first section we describe the interaction of a dielectric material with the electric field to emphasize the fundamental differences between the mechanism of absorption (resonance) for infrared spectroscopy and of scattering (oscillating dipole) for Raman spectroscopy. We thus provide some keys for applying methods based on the Group Theory that allow predicting and analyzing optical phonons at the Brillouin zone center.
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