Stable high-reflection Be/Mg multilayer mirrors for solar astronomy at 304 nm | Zendy

В. Н. Полковников | Zendy; Н. И. Чхало | Zendy; Р. С. Плешков | Zendy; Н. Н. Салащенко | Zendy; F. Schäfers | Zendy; Mewael Sertsu | Zendy; Andréy Sokolov | Zendy; М. В. Свечников | Zendy; S. Yu. Zuev | Zendy

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Stable high-reflection Be/Mg multilayer mirrors for solar astronomy at 304 nm

Author(s) -

В. Н. Полковников,

Н. И. Чхало,

Р. С. Плешков,

Н. Н. Салащенко,

F. Schäfers,

Mewael Sertsu,

Andréy Sokolov,

М. В. Свечников,

S. Yu. Zuev

Publication year - 2019

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.44.000263

Subject(s) - optics , reflection (computer programming) , beryllium , materials science , aluminium , physics , computer science , nuclear physics , metallurgy , programming language

The He-II (λ=30.4 nm) emission line is one of the spectral channels chosen to study solar corona. This Letter reports on investigations of novel beryllium (Be)/magnesium multilayer coatings which, when incorporated beneath a protective bilayer of aluminium and Be, ensure particularly high-reflection coefficients of up to 56%, a spectral width of Δλ=1.6 nm (λ/Δλ≈20), and high temporal stability.

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