Generation and application of ultrashort X-ray pulses
LASER PART BEAMS 19:1 (2001) 15-22
Abstract:
Relatively small-scale laser-driven sources of short wavelength radiation covering a range from the extreme ultraviolet to the hard X-ray regime are now available. Because the duration of the X-ray pulses is comparable to, or shorter than the laser pulse width, it is possible to carry out X-ray measurements with picosecond or femtosecond time resolution.Femtosecond Optical and X-Ray Measurement of the Semiconductor-to-Metal Transition in VO2
Institute of Electrical and Electronics Engineers (IEEE) (2001) 162-162
Observation of ultrafast structural transitions in solids using femtosecond x-ray pulses
Optics InfoBase Conference Papers (2001)
Abstract:
Time-resolved x-ray diffraction using multi-keV x-ray pulses reveals non-thermal changes of the lattice structure in less than 300 fs in a semiconductor and, for the first time, in a metal.Transient lattice dynamics in fs-laser-excited semiconductors probed by ultrafast x-ray diffraction
Journal De Physique. IV : JP 11:2 (2001)
Abstract:
A study of lattice dynamics in fs-laser-excited crystalline bulk Ge and Ge/Si-heterostructures, using time-resolved x-ray diffraction, was presented. Fast energy transport deep into the bulk of the material, coherent acoustic phonon dynamics, lattice anharmonicity, and vibrational transport across a buried interfaces were observed. Graphs showing time-dependent shifts of the centroid of the measured rocking curves in the Ge-overlayer and in the Si-substrate for different fluences, were presented.Ultrafast structural dynamics in solids investigated with femtosecond x-ray pulses
Optics InfoBase Conference Papers (2001)