@article{7430, author = {R. A. Loch and A. Dubrouil and R. Sobierajski and D. Descamps and B. Fabre and P. Lidon and R. W. E. van de Kruijs and F. Boekhout and E. Gullikson and J. Gaudin and E. Louis and F. Bijkerk and E. Mevel and S. Petit and E. Constant and Y. Mairesse}, title = {Phase characterization of the reflection on an extreme UV multilayer: comparison between attosecond metrology and standing wave measurements}, abstract = {We characterize the phase shift induced by reflection on a multilayer mirror in the extreme UV range (80-93 eV) using two techniques: one based on high order harmonic generation and attosecond metrology (reconstruction of attosecond beating by interference of two-photon transitions), and a second based on synchrotron radiation and measurements of standing waves (total electron yield). We find an excellent agreement between the results from the two measurements and a flat group delay shift (+/- 40 as) over the main reflectivity peak of the mirror. (C) 2011 Optical Society of America }, year = {2011}, journal = {Optics Letters}, volume = {36}, pages = {3386-3388}, month = {Sep}, isbn = {0146-9592}, doi = {10.1364/OL.36.003386}, note = {ISI Document Delivery No.: 817JCTimes Cited: 0Cited Reference Count: 11}, language = {English}, }