Paper
25 September 2008 Characterization of the optical constants of materials from the visible to the soft x-rays
Juan I. Larruquert, Mónica Fernández-Perea, Manuela Vidal-Dasilva, José A. Aznárez, José A. Méndez, Luca Poletto, Denis Garoli, A. Marco Malvezzi, Angelo Giglia, Stefano Nannarone
Author Affiliations +
Abstract
A summary of the research performed on the optical characterization of Sc and of several lanthanides from the visible to the soft x-rays is presented. The low absorption of these materials mainly below the O2,3 edge (L2,3 edge for Sc) turns them promising materials for the realization of multilayer mirrors in a spectral range in which most materials in nature absorb strongly. Thin-film samples with several thicknesses of the target material were deposited by evaporation over thin-film substrates in UHV, and their transmittance was measured in situ. A wide spectral range of direct characterization, along with extrapolations to longer and shorter wavelengths either using literature data (when available) or model predictions, enabled the development of consistent optical constants over the whole spectrum. An assortment of consistency sum rules has been used, and it was found that each of them highlights a given spectral range, which may help evaluate the consistency of each part of the combined spectrum.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Juan I. Larruquert, Mónica Fernández-Perea, Manuela Vidal-Dasilva, José A. Aznárez, José A. Méndez, Luca Poletto, Denis Garoli, A. Marco Malvezzi, Angelo Giglia, and Stefano Nannarone "Characterization of the optical constants of materials from the visible to the soft x-rays", Proc. SPIE 7101, Advances in Optical Thin Films III, 71010W (25 September 2008); https://doi.org/10.1117/12.797419
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Cited by 2 scholarly publications.
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KEYWORDS
Transmittance

Lanthanides

Refractive index

Thin films

Electrons

Europium

X-rays

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