Transition metal coatings for reflection polarimeters in the 50-100 eV region

Fabio Frassetto; Paola Zuppella; Fabio Samparisi; Nicola Fabris; Luca Poletto

doi:10.1117/12.2522256

24 April 2019 Transition metal coatings for reflection polarimeters in the 50-100 eV region

Fabio Frassetto, Paola Zuppella, Fabio Samparisi, Nicola Fabris, Luca Poletto

Proceedings Volume 11038, X-Ray Free-Electron Lasers: Advances in Source Development and Instrumentation V; 110380M (2019) https://doi.org/10.1117/12.2522256
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic

Abstract

Spectroscopic experiments requiring the knowledge of the specific state of light polarization for synchrotron radiation, high-order laser harmonics and free-electron lasers are increasing in the recent years. Correspondingly, there has been an increasing demand for systems to measure polarization in the extreme ultraviolet (XUV) and soft X-ray (SX) regions. Polarization can be measured at a specific wavelength through the use of polarizers based on multilayer coatings, that are almost routinely available. The measurement on a broad band requires to operate at grazing incidence with metallic coatings. It is here presented the design and performances of a reflection polarimeter to be used in the 50-100 eV region with transition metal-coated optics. With respect to standard polarimeters, based on gold-coated optics, the presented coatings gives higher flux and higher contrast between phase and reflectivity responses for s- and p-polarized light. The optical and mechanical design of the polarimeter and the estimated throughput are discussed.

Conference Presentation

Citation Download Citation

Fabio Frassetto, Paola Zuppella, Fabio Samparisi, Nicola Fabris, and Luca Poletto "Transition metal coatings for reflection polarimeters in the 50-100 eV region", Proc. SPIE 11038, X-Ray Free-Electron Lasers: Advances in Source Development and Instrumentation V, 110380M (24 April 2019); https://doi.org/10.1117/12.2522256

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