Categories
BLOG

x strain

Probing impulsive strain propagation with X-ray pulses

Affiliation

  • 1 Departement of Physics, University of Michigan, Ann Arbor 48109-1120, USA.
  • PMID: 11290110
  • DOI: 10.1103/PhysRevLett.86.3072

Probing impulsive strain propagation with X-ray pulses

  • Search in PubMed
  • Search in NLM Catalog
  • Add to Search

Authors

Affiliation

  • 1 Departement of Physics, University of Michigan, Ann Arbor 48109-1120, USA.
  • PMID: 11290110
  • DOI: 10.1103/PhysRevLett.86.3072

Abstract

Pump-probe time-resolved x-ray diffraction of allowed and nearly forbidden reflections in InSb is used to follow the propagation of a coherent acoustic pulse generated by ultrafast laser excitation. The surface and bulk components of the strain could be simultaneously measured due to the large x-ray penetration depth. Comparison of the experimental data with dynamical diffraction simulations suggests that the conventional model for impulsively generated strain underestimates the partitioning of energy into coherent modes.

Pump-probe time-resolved x-ray diffraction of allowed and nearly forbidden reflections in InSb is used to follow the propagation of a coherent acoustic pulse generated by ultrafast laser excitation. The surface and bulk components of the strain could be simultaneously measured due to the large x-ray …