Phase delay characterization of multilayer coatings for FEL applications

Alain J. Corso; Enrico Tessarolo; Paola Zuppella; Sara Zuccon; Marco Nardello; Maria G. Pelizzo

doi:10.1117/12.2061818

5 September 2014 Phase delay characterization of multilayer coatings for FEL applications

Alain J. Corso, Enrico Tessarolo, Paola Zuppella, Sara Zuccon, Marco Nardello, Maria G. Pelizzo

Proceedings Volume 9207, Advances in X-Ray/EUV Optics and Components IX; 92070M (2014) https://doi.org/10.1117/12.2061818
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

The phase delay induced by multilayer (ML) mirrors is an important feature in many fields such as attosecond pulses compression, photolithography or in pump and probe experiments performed with Free Electron Laser (FEL) pulses. The experimental characterization of the ML phase delay can be obtained by the standing wave distribution measurement (by using Total Electron Yield (TEY) signal) combined to reflectance measurement. In this work, a ML structure with aperiodic capping-layers was designed and deposited for FEL applications and their reflectance and phase delay was characterized. The method adopted allows to retrieve the ML phase delay by using the TEY signals taken at different working configurations and it doesn’t require the comparison with a bulk reference sample. The results obtained are presented and discussed.

Citation Download Citation

Alain J. Corso, Enrico Tessarolo, Paola Zuppella, Sara Zuccon, Marco Nardello, and Maria G. Pelizzo "Phase delay characterization of multilayer coatings for FEL applications", Proc. SPIE 9207, Advances in X-Ray/EUV Optics and Components IX, 92070M (5 September 2014); https://doi.org/10.1117/12.2061818

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