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

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 ($E=3\mathrm{keV}$, $\lambda =0.414\mathrm{nm}$), 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 $6.8\mu \mathrm{m}\times 9\mu \mathrm{m}$ FWHM focal spot.

© 2006 Optical Society of America

Sub-5 nm hard x-ray point focusing by a combined Kirkpatrick-Baez mirror and multilayer zone plate

F. Döring, A.L. Robisch, C. Eberl, M. Osterhoff, A. Ruhlandt, T. Liese, F. Schlenkrich, S. Hoffmann, M. Bartels, T. Salditt, and H.U. Krebs
Opt. Express 21(16) 19311-19323 (2013)

Wavefront improvement in an injection-seeded soft x-ray laser based on a solid-target plasma amplifier

Lu Li, Yong Wang, Shoujun Wang, Eduardo Oliva, Liang Yin, T. T. Thuy Le, Sameh Daboussi, David Ros, Gilles Maynard, Stephane Sebban, Bitao Hu, Jorge J. Rocca, and Philippe Zeitoun
Opt. Lett. 38(20) 4011-4014 (2013)

At-wavelength metrology of hard X-ray mirror using near field speckle

Sebastien Berujon, Hongchang Wang, Simon Alcock, and Kawal Sawhney
Opt. Express 22(6) 6438-6446 (2014)

Wavefront metrology for coherent hard X-rays by scanning a microsphere

Eirik Torbjørn Bakken Skjønsfjell, Yuriy Chushkin, Federico Zontone, Nilesh Patil, Alain Gibaud, and Dag W. Breiby
Opt. Express 24(10) 10710-10722 (2016)

Wavefront measurement for a hard-X-ray nanobeam using single-grating interferometry

Satoshi Matsuyama, Hikaru Yokoyama, Ryosuke Fukui, Yoshiki Kohmura, Kenji Tamasaku, Makina Yabashi, Wataru Yashiro, Atsushi Momose, Tetsuya Ishikawa, and Kazuto Yamauchi
Opt. Express 20(22) 24977-24986 (2012)