Multilayer beamsplitter polarizers for key UV-FUV spectral lines of solar polarimetry

Multilayer beamsplitter polarizers have been developed for improved solar polarimetry at key spectral lines. The advantage of beamsplitter polarizers is that a single device separates s from p polarization; this helps minimize attenuation and enables a more compact and lighter polarimeter, which is...

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Published inOptics express Vol. 30; no. 16; pp. 29735 - 29748
Main Authors Gutiérrez-Luna, Nuria, Capobianco, Gerardo, Malvezzi, Andrea Marco, Honrado-Benítez, Carlos, Marcos, Luis Rodríguez-de, Larruquert, Juan I., Giglia, Angelo, Mahne, Nicola, Nannarone, Stefano, Fineschi, Silvano
Format Journal Article
LanguageEnglish
Published 01.08.2022
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Summary:Multilayer beamsplitter polarizers have been developed for improved solar polarimetry at key spectral lines. The advantage of beamsplitter polarizers is that a single device separates s from p polarization; this helps minimize attenuation and enables a more compact and lighter polarimeter, which is important for space instruments. Polarizers based on Al/AlF 3 multilayers were prepared for both C IV (155 nm) and Mg II (280 nm) lines, and based on Al/MgF 2 multilayers for H Lyman α line (121.6 nm). Polarizers were designed to mainly reflect (transmit) s (p) polarization. Beamsplitter performance and throughput are shown to compare advantageously with polarizers in the literature. Beamsplitter polarizers kept a valuable performance after several years of ageing.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.463215