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Imaging ultrafast dynamical diffraction wavefronts in strained Si with coherent X-rays
- Source :
- Phys. Rev. Lett. 127, 157402 (2021)
- Publication Year :
- 2020
-
Abstract
- Dynamical diffraction effects in single crystals produce highly monochromatic parallel X-ray beams with a mutual separation of a few micrometer and a time-delay of a few fs -the so-called echoes. This ultrafast diffraction effect is used at X-ray Free Electron Lasers in self-seeding schemes to improve beam monochromaticity. Here, we present a coherent X-ray imaging measurement of echoes from Si crystals and demonstrate that a small surface strain can be used to tune their temporal delay. These results represent a first step towards the ambitious goal of strain-tailoring new X-ray optics.
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 127, 157402 (2021)
- Publication Type :
- Report
- Accession number :
- edsarx.2012.08893
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.127.157402