High harmonics generation: Spatial characterisation and applicationsJ. Gautier1, P. Zeitoun1, A.S. Morlens1, S. Sebban1, C. Valentin1, E. Papalazarou1, J.P. Goddet1, G. Lambert1, G. Lambert1, T. Marchenko1 and M. Fajardo2
1 Laboratoire d'Optique Applique ENSTA Palaiseau, France
2 Insituto Superior Tecnico, Av. Pais Rovisco, Lisbon, Portugal
Published online: 7 July 2009
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.The influence of high harmonic generation parameters was also studied in particularly the influence of the infra-red wave-front. This wave front quality allows applications by focalization of this beam. We present experiment we performed on damage target and holography.
© EDP Sciences 2009