Automatic alignment of a Kirkpatrick-Baez active optic by use of a soft-x-ray Hartmann wavefront sensor - Archive ouverte HAL Access content directly
Journal Articles Optics Letters Year : 2006

Automatic alignment of a Kirkpatrick-Baez active optic by use of a soft-x-ray Hartmann wavefront sensor

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Mourad Idir
  • Function : Author
Xavier Levecq
  • Function : Author
Laurent Couvet
  • Function : Author
Samuel Bucourt
  • Function : Author
Philippe Zeitoun

Abstract

We present what we believe to be the first automatic alignment of a synchrotron beamline by the Hartmann technique. Experiments were performed, in the soft-x-ray range (E=3 keV, lambda=0.414 nm), by using a four-actuator Kirkpatrick-Baez (KB) active optic. A system imaging the KB focal spot and a soft-x-ray Hartmann wavefront sensor were used alternatively to control the KB optic. The beam corrected with the help of the imaging system was used to calibrate the wavefront sensor. With both closed loops, we focused the beam into a 6.8 µm×9 µm FWHM focal spot.
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Dates and versions

hal-00521853 , version 1 (28-09-2010)

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Pascal Mercere, Mourad Idir, Thierry Moreno, Gilles Cauchon, Guillaume Dovillaire, et al.. Automatic alignment of a Kirkpatrick-Baez active optic by use of a soft-x-ray Hartmann wavefront sensor. Optics Letters, 2006, 31 (2), pp.199-201. ⟨10.1364/OL.31.000199⟩. ⟨hal-00521853⟩
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