Optimized spatial overlap in optical pump-X-ray probe experiments with high repetition rate using laser-induced surface distortions
- Ultrafast X-ray diffraction experiments require careful adjustment of the spatial overlap between the optical excitation and the X-ray probe pulse. This is especially challenging at high laser repetition rates. Sample distortions caused by the large heat load on the sample and the relatively low optical energy per pulse lead to only tiny signal changes. In consequence, this results in small footprints of the optical excitation on the sample, which turns the adjustment of the overlap difficult. Here a method for reliable overlap adjustment based on reciprocal space mapping of a laser excited thin film is presented.
| Author details: | Matthias Reinhardt, Azize Koc, Wolfram LeitenbergerGND, Peter Gaal, Matias BargheerORCiDGND |
|---|---|
| DOI: | https://doi.org/10.1107/S1600577515024443 |
| ISSN: | 1600-5775 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/26917135 |
| Title of parent work (English): | Journal of synchrotron radiation |
| Publisher: | International Union of Crystallography |
| Place of publishing: | Chester |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2016 |
| Publication year: | 2016 |
| Release date: | 2020/03/22 |
| Tag: | heat diffusion; nanostructures; optical pump; surface deformation; ultrafast X-ray diffraction |
| Volume: | 23 |
| Number of pages: | 6 |
| First page: | 474 |
| Last Page: | 479 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
