Surface investigation of VUV-optical components after exposure to high-energy synchrotron radiation

Stefan Guenster; Holger Blaschke; Kai Starke; Detlev Ristau; Miltcho B. Danailov; B. Diviacco; Alexandre Gatto; Norbert Kaiser; Francesca Sarto; Enrico Massetti

doi:10.1117/12.525490

10 June 2004 Surface investigation of VUV-optical components after exposure to high-energy synchrotron radiation

Stefan Guenster, Holger Blaschke, Kai Starke, Detlev Ristau, Miltcho B. Danailov, B. Diviacco, Alexandre Gatto, Norbert Kaiser, Francesca Sarto, Enrico Massetti

Author Affiliations +

Proceedings Volume 5273, Laser-Induced Damage in Optical Materials: 2003; (2004) https://doi.org/10.1117/12.525490
Event: XXXV Annual Symposium on Optical Materials for High Power Lasers: Boulder Damage Symposium, 2003, Boulder, Colorado, United States

Abstract

In the framework of the European research project EUFELE, a set of fluoride and oxide single layer coatings was deposited, irradiated with synchrotron radiation, and subsequently thoroughly characterised. The observed coating damage is strongly related to the spatial distribution of the synchrotron radiation. Therefore, characterisation methods have to be adapted to techniques that are capable to reveal the structural and optical behavior with adequate spatial resolution. A summary of the radiation damages of oxide materials (SiO₂, Al₂O₃ and HfO₂) produced by conventional and sputter deposition techniques, and of fluoride single layers (MgF₂, LaF₃, AlF₃) deposited by thermal evaporation is presented. Degradation was observed within the irradiated areas as well as in the not directly exposed area. The observed degradation effects depend on the surface site. Oxide systems show a superior resistance compared to fluoride coatings. The most sensitive material is Lanthanum fluoride.

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Stefan Guenster, Holger Blaschke, Kai Starke, Detlev Ristau, Miltcho B. Danailov, B. Diviacco, Alexandre Gatto, Norbert Kaiser, Francesca Sarto, and Enrico Massetti "Surface investigation of VUV-optical components after exposure to high-energy synchrotron radiation", Proc. SPIE 5273, Laser-Induced Damage in Optical Materials: 2003, (10 June 2004); https://doi.org/10.1117/12.525490

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