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26 August 2015 Multilayer coatings for free electron laser sources
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Extreme Ultraviolet (EUV) multilayer (ML) technology has been intensively applied in many scientific and technological fields such as solar physics and photolithography. More recently, the advent of free electron lasers (FEL) emitting bright sub-ps pulses with very high quality in term of intensity stability, coherence and temporal shape has encouraged the usage of multilayer coatings also in the transport and manipulation of FEL radiation. In fact, conventional single layers coated mirrors provide negligible reflectance in the EUV spectral range whereas ML mirrors can reach high efficiency at normal incidence without affecting the pulses characteristics. Such optical elements have been also exploited at FERMI@ELETTRA FEL where novel multilayer coatings specifically conceived for pump and probe experiment and ultrafast absorption spectroscopy have been designed. The main results are reported.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alain Jody Corso, Paola Zuppella, Davide Bacco, Enrico Tessarolo, Marco Nardello, Francesca Gerlin, Emiliano Principi, Erika Giangrisostomi, Filippo Bencivenga, Alessandro Gessini, C. Masciovecchio, A. Giglia, S. Nannarone, and Maria Guglielmina Pelizzo "Multilayer coatings for free electron laser sources", Proc. SPIE 9588, Advances in X-Ray/EUV Optics and Components X, 958802 (26 August 2015);

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