A pump-probe dark-field X-ray microscopy (DFXM) experiment was carried out at the Advanced Photon Source (APS) with nanosecond drive laser pulses and hybrid mode X-ray probe pulses. We observe a thermal decay due to laser-induced heat diffusion in a Germanium single crystal which matches the theoretical prediction. The single pulse DFXM imaging in combination with the laser-pump X-ray probe method could reveal thermal strain formation and propagation of the acoustic wave "on-the-fly" generated by a laser-induced lattice deformation. This will open a new avenue of materials research on laser-induced dynamic phenomena in solids at sub-nanosecond time scales.
@article{arxiv.2210.06243,
title = {Pump-probe Dark-field X-ray Microscopy},
author = {Ishwor Poudyal and Zhi Qiao and Arndt Last and Michael R. Armstrong and Zahir Islam},
journal= {arXiv preprint arXiv:2210.06243},
year = {2022}
}
Comments
Updated Author list on the page consistent with the pdf