Acoustic phonon dynamics in nanometric multilayers
type: Dataset
description: This thesis presents an experimental and theoretical study of the acoustic phonon dynamics at the nanometric scale, by picosecond acoustic techniques and Raman scattering. We have studied the acoustic phonon (with frequencies in the GHz-THz range) transmission, generation and detection in superlattices and nanocavities made of semiconductor or dielectric oxyde materials. We have designed, optimized and characterized aperiodic phonon devices and coupled acoustic nanocavity systems. Finally, we have used the optical confinenment effects to enhance the coherent acoustic phonon generation and detection processes and to change the selection rules. In addition, we have developed models to computen the acoustic and optical responses of structures excited by ultrashort laser pulses, and to evaluate the Raman scattering cross section in nanometric multilayers.
landing page: https://theses.hal.science/tel-00814251
identifier: NNT: 2009PA066183
keyword: diffusion-raman
keyword: dispositifs-phoniques
keyword: infoeu-reposemanticsdoctoralthesis
keyword: multicouches
keyword: nanocavite
keyword: nanophononique
keyword: phonons-acoustiques
keyword: phonons-coherents
keyword: physmecaacouphysics-physicsmechanics-physicsacoustics-physicsclass-ph
keyword: pompe-sonde
keyword: semiconducteurs
keyword: spiacouengineering-sciences-physicsacoustics-physicsclass-ph
keyword: theses
issued: 2026-05-11T11:12:22.327356
modified: 2026-05-11T11:12:22.327361
language: fr
contact point: Organization
  fn: CCSD

test_moissonnage_selune
type: Agent

Acoustic phonon dynamics in nanometric multilayers
type: Distribution
format: HTML
access URL: https://theses.hal.science/tel-00814251
issued: 2026-05-11T11:12:22.341369
modified: 2026-05-11T11:12:22.308466