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Proceedings Paper

High order harmonics wavefront measurement and optimization
Author(s): J. Gautier; A. S. Morlens; P. Zeitoun; E. Papalarazou; G. Rey; C. Valentin; J. P. Goddet; S. Sebban; Guillaume Dovillaire; Xavier Levecq; Samuel Bucourt
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Paper Abstract

We present a full optimization of the high harmonics wave-front thanks to the use of a soft x-ray Hartmann sensor. The sensor was calibrated using high harmonics source with a λ/50 accuracy. We observed relatively good high harmonics wave-front, two times the diffraction-limit, with astigmatism as the dominant aberration for any interaction parameters. By slightly clipping the unfocused beam, it is possible to produce a diffraction-limited beam containing about 90% of the incident energy. The influence of high harmonic generation parameters was also studied in particularly the influence of the infra-red wave-front. In particular we studied the correlation between the infrared wave-front use to create high harmonics and the high harmonic wave-front. We also report wave-front measurements of a high order harmonic beam into an x-ray laser plasma amplifier at 32.8 nm.

Paper Details

Date Published: 1 October 2007
PDF: 6 pages
Proc. SPIE 6704, Advances in Metrology for X-Ray and EUV Optics II, 670403 (1 October 2007); doi: 10.1117/12.732339
Show Author Affiliations
J. Gautier, Lab. d'Optique Appliquée (France)
A. S. Morlens, Lab. d'Optique Appliquée (France)
P. Zeitoun, Lab. d'Optique Appliquée (France)
E. Papalarazou, Lab. d'Optique Appliquée (France)
G. Rey, Lab. d'Optique Appliquée (France)
C. Valentin, Lab. d'Optique Appliquée (France)
J. P. Goddet, Lab. d'Optique Appliquée (France)
S. Sebban, Lab. d'Optique Appliquée (France)
Guillaume Dovillaire, Imagine Optic (France)
Xavier Levecq, Imagine Optic (France)
Samuel Bucourt, Imagine Optic (France)

Published in SPIE Proceedings Vol. 6704:
Advances in Metrology for X-Ray and EUV Optics II
Lahsen Assoufid; Peter Z. Takacs; Masaru Ohtsuka, Editor(s)

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