We will present results of an experiment dedicated to the XUV wavefront profile measurement of the HHG (High-order Harmonic Generation) beam, carried at the PALS laser center. The wavefront sensing has been achieved by using the PDI (Point Diffraction Interferometer) technique. The performance of the developed PDI sensor has been tested with 10-Hz XUV source emitting at the wavelength λ=30nm, generated in Ar gas cell by 300 mJ, 40-fs IR laser pulses. The design and development of this XUV wavefront sensor will also be discussed, showing advantages and limitations of applicability of the PDI technique in the XUV and soft-x-ray spectral region.
© 2011 Optical Society of AmericaPDF Article