Reconstruction of Acoustic Echoes and Their Effect on Brillouin Oscillations in Nanoscale Characterization of Supported Thin Films by Ultrafast Photoacoustics
The paper presents an experimental and theoretical analysis of the effects accompanying the non-contact, non-destructive nanoscale characterization of thin-film metal–dielectric structures through the substrate, using high-amplitude picosecond acoustic pulses generated by an ultrafast laser. Time-resolved reflectivity...