title: Optical control of coherent lattice motions probed by femtosecond electron diffraction.
abstract: We report the study of laser-induced coherent lattice motions using femtosecond electron diffraction. The oscillations of Bragg peak positions associated with a damped lattice vibration along the surface normal were directly observed in real time and with sub-milli-angstrom spatial resolution. In addition, by using a pair of optical excitation pulses and varying their time delay and relative pulse intensities, we demonstrated the successful control of coherent lattice motions.
authors.forename: H
authors.initials: H
authors.lastname: Park
authors.forename: S
authors.initials: S
authors.lastname: Nie
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: R
authors.initials: R
authors.lastname: Clinite
authors.forename: J
authors.initials: J
authors.lastname: Cao