Spatially confined low-power optically pumped ultrafast synchrotron x-ray nanodiffraction
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853 (United States)
- X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
The combination of ultrafast optical excitation and time-resolved synchrotron x-ray nanodiffraction provides unique insight into the photoinduced dynamics of materials, with the spatial resolution required to probe individual nanostructures or small volumes within heterogeneous materials. Optically excited x-ray nanobeam experiments are challenging because the high total optical power required for experimentally relevant optical fluences leads to mechanical instability due to heating. For a given fluence, tightly focusing the optical excitation reduces the average optical power by more than three orders of magnitude and thus ensures sufficient thermal stability for x-ray nanobeam studies. Delivering optical pulses via a scannable fiber-coupled optical objective provides a well-defined excitation geometry during rotation and translation of the sample and allows the selective excitation of isolated areas within the sample. Experimental studies of the photoinduced lattice dynamics of a 35 nm BiFeO{sub 3} thin film on a SrTiO{sub 3} substrate demonstrate the potential to excite and probe nanoscale volumes.
- OSTI ID:
- 22482748
- Journal Information:
- Review of Scientific Instruments, Vol. 86, Issue 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
Mesoscopic structural phase progression in photo-excited VO2 revealed by time-resolved x-ray diffraction microscopy
|
journal | February 2016 |
Time-resolved X-ray diffraction system for study of Pb(Zr, Ti)O 3 films under a temporal electric field at BL15XU, SPring-8
|
journal | September 2019 |
Optimized spatial overlap in optical pump–X-ray probe experiments with high repetition rate using laser-induced surface distortions
|
journal | February 2016 |
| Mesoscopic structural phase progression in photo-excited VO2 revealed by time-resolved x-ray diffraction microscopy | text | January 2015 |
Similar Records
Optical transient grating pumped X-ray diffraction microscopy for studying mesoscale structural dynamics
X-ray nanodiffraction imaging reveals distinct nanoscopic dynamics of an ultrafast phase transition