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Imaging Ultrafast Dynamical Diffraction Wave Fronts in Strained Si with Coherent X Rays

Rodriguez-Fernandez, Angel LU ; Diaz, Ana ; Iyer, Anand H.S. ; Verezhak, Mariana ; Wakonig, Klaus ; Colliander, Magnus H. and Carbone, Dina LU (2021) In Physical Review Letters 127(15).
Abstract

Dynamical diffraction effects in thin single crystals produce highly monochromatic parallel x-ray beams with a mutual separation of a few microns and a time delay of a few femtoseconds—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 toward the ambitious goal of strain tailoring new x-ray optics and, conversely, open up the possibility of using ultrafast dynamical diffraction effects to study strain in materials.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
127
issue
15
article number
157402
publisher
American Physical Society
external identifiers
  • scopus:85116855589
  • pmid:34677993
ISSN
0031-9007
DOI
10.1103/PhysRevLett.127.157402
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2021 American Physical Society
id
49a7f379-56b5-4c78-8293-fa2147de46df
date added to LUP
2021-10-26 13:04:28
date last changed
2024-06-15 19:17:34
@article{49a7f379-56b5-4c78-8293-fa2147de46df,
  abstract     = {{<p>Dynamical diffraction effects in thin single crystals produce highly monochromatic parallel x-ray beams with a mutual separation of a few microns and a time delay of a few femtoseconds—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 toward the ambitious goal of strain tailoring new x-ray optics and, conversely, open up the possibility of using ultrafast dynamical diffraction effects to study strain in materials.</p>}},
  author       = {{Rodriguez-Fernandez, Angel and Diaz, Ana and Iyer, Anand H.S. and Verezhak, Mariana and Wakonig, Klaus and Colliander, Magnus H. and Carbone, Dina}},
  issn         = {{0031-9007}},
  language     = {{eng}},
  month        = {{10}},
  number       = {{15}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Imaging Ultrafast Dynamical Diffraction Wave Fronts in Strained Si with Coherent X Rays}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.127.157402}},
  doi          = {{10.1103/PhysRevLett.127.157402}},
  volume       = {{127}},
  year         = {{2021}},
}