title: Probing impulsive strain propagation with X-ray pulses.
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.
authors: Departement of Physics, University of Michigan, Ann Arbor 48109-1120, USA.
authors: D A
authors: DA
authors: Reis
authors: M F
authors: MF
authors: DeCamp
authors: P H
authors: PH
authors: Bucksbaum
authors: R
authors: R
authors: Clarke
authors: E
authors: E
authors: Dufresne
authors: M
authors: M
authors: Hertlein
authors: R
authors: R
authors: Merlin
authors: R
authors: R
authors: Falcone
authors: H
authors: H
authors: Kapteyn
authors: M M
authors: MM
authors: Murnane
authors: J
authors: J
authors: Larsson
authors: T
authors: T
authors: Missalla
authors: J S
authors: JS
authors: Wark