Picosecond acoustics: from solid-state physics to biological issues

Laurent Belliard

Professeur à l’Institut des NanoSciences de Paris

Le 24 avril 2025 à 13h30, location to be communicated later

Résumé : 

Since the pioneering work of H. Maris in the 1980s on the generation of coherent acoustic waves at very high frequencies (>100GHz), the versatility of picosecond acoustics has made it possible to tackle a large number of problems, ranging from solid-state physics to cell regeneration, via geophysics or more applied fields such as corrosion or microelectronics.  After outlining the basic principles of these time-resolved pump-probe approaches, we will attempt to illustrate the technique's potential on a wide range of systems.