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Krzywinski J, Conley R, Moeller S, et al. Damage thresholds for blaze diffraction gratings and grazing incidence optics at an X-ray free-electron laser. J Synchrotron Radiat. 2018;25:85-90doi: 10.1107/S1600577517016083.
Krzywinski, J., Conley, R., Moeller, S., Gwalt, G., Siewert, F., Waberski, C., Zeschke, T., & Cocco, D. (2018). Damage thresholds for blaze diffraction gratings and grazing incidence optics at an X-ray free-electron laser. Journal of synchrotron radiation, 2585-90. https://doi.org/10.1107/S1600577517016083
Krzywinski, Jacek, et al. "Damage thresholds for blaze diffraction gratings and grazing incidence optics at an X-ray free-electron laser." Journal of synchrotron radiation vol. 25 (2018): 85-90. doi: https://doi.org/10.1107/S1600577517016083
Krzywinski J, Conley R, Moeller S, Gwalt G, Siewert F, Waberski C, Zeschke T, Cocco D. Damage thresholds for blaze diffraction gratings and grazing incidence optics at an X-ray free-electron laser. J Synchrotron Radiat. 2018 Jan 01;25:85-90. doi: 10.1107/S1600577517016083. Epub 2018 Jan 01. PMID: 29271756; PMCID: PMC5741123.
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J Synchrotron Radiat. 2018 Jan 01;25:85-90. doi: 10.1107/S1600577517016083. Epub 2018 Jan 01.

Damage thresholds for blaze diffraction gratings and grazing incidence optics at an X-ray free-electron laser.

Journal of synchrotron radiation

Jacek Krzywinski, Raymond Conley, Stefan Moeller, Grzegorz Gwalt, Frank Siewert, Christoph Waberski, Thomas Zeschke, Daniele Cocco

Affiliations

  1. SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
  2. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA.
  3. Helmholtz Zentrum Berlin für Materialen und Energie, Albert-Einstein-Strasse 15, 12489 Berlin, Germany.

PMID: 29271756 PMCID: PMC5741123 DOI: 10.1107/S1600577517016083

Abstract

The Linac Coherent Light Source is upgrading its machine to high repetition rate and to extended ranges. Novel coatings, with limited surface oxidation, which are able to work at the carbon edge, are required. In addition, high-resolution soft X-ray monochromators become necessary. One of the big challenges is to design the mirror geometry and the grating profile to have high reflectivity (or efficiency) and at the same time survive the high peak energy of the free-electron laser pulses. For these reasons the experimental damage threshold, at 900 eV, of two platinum-coated gratings with different blazed angles has been investigated. The gratings were tested at 1° grazing incidence. To validate a model for which the damage threshold on the blaze grating can be estimated by calculating the damage threshold of a mirror with an angle of incidence identical to the angle of incidence on the grating plus the blaze angle, tests on Pt-coated substrates have also been performed. The results confirmed the prediction. Uncoated silicon, platinum and SiB

Keywords: diffraction gratings; free-electron laser; optical damage

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