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Time-resolved coherent X-ray diffraction imaging of surface acoustic waves

Time-resolved coherent X-ray diffraction experiments of standing surface acoustic waves, illuminated under grazing incidence by a nanofocused synchrotron beam, are reported. The data have been recorded in stroboscopic mode at controlled and varied phase between the acoustic frequency generator and t...

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Detalles Bibliográficos
Autores principales: Nicolas, Jan-David, Reusch, Tobias, Osterhoff, Markus, Sprung, Michael, Schülein, Florian J. R., Krenner, Hubert J., Wixforth, Achim, Salditt, Tim
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4180738/
https://www.ncbi.nlm.nih.gov/pubmed/25294979
http://dx.doi.org/10.1107/S1600576714016896
Descripción
Sumario:Time-resolved coherent X-ray diffraction experiments of standing surface acoustic waves, illuminated under grazing incidence by a nanofocused synchrotron beam, are reported. The data have been recorded in stroboscopic mode at controlled and varied phase between the acoustic frequency generator and the synchrotron bunch train. At each time delay (phase angle), the coherent far-field diffraction pattern in the small-angle regime is inverted by an iterative algorithm to yield the local instantaneous surface height profile along the optical axis. The results show that periodic nanoscale dynamics can be imaged at high temporal resolution in the range of 50 ps (pulse length).