Multilayer reflective polarizers for the far ultraviolet

Juan I. Larruquert; José A. Aznárez; Luis Rodríguez-de Marcos; José A. Méndez; A. Marco Malvezzi; Angelo Giglia; Paolo Miotti; Fabio Frassetto; Giuseppe Massone; Stefano Nannarone; Giuseppe Crescenzio; Gerardo Capobianco; Silvano Fineschi

doi:10.1117/12.2017444

3 May 2013 Multilayer reflective polarizers for the far ultraviolet

Juan I. Larruquert, José A. Aznárez, Luis Rodríguez-de Marcos, José A. Méndez, A. Marco Malvezzi, Angelo Giglia, Paolo Miotti, Fabio Frassetto, Giuseppe Massone, Stefano Nannarone, Giuseppe Crescenzio, Gerardo Capobianco, Silvano Fineschi

Author Affiliations +

Proceedings Volume 8777, Damage to VUV, EUV, and X-ray Optics IV; and EUV and X-ray Optics: Synergy between Laboratory and Space III; 87771D (2013) https://doi.org/10.1117/12.2017444
Event: SPIE Optics + Optoelectronics, 2013, Prague, Czech Republic

Abstract

Polarimetry in the far ultraviolet (FUV) is a powerful tool for the interpretation of the role of the coronal plasma in the energy transfer processes from the inner parts of the Sun to the outer space. FUV polarimetry from space provides more accurate observations on the kinetics of the features and on local magnetic fields through the Doppler and Hanle resonant electron scattering effects. Particularly interesting lines for FUV polarimetry are H Lyman α (121.6 nm) and β (102.6 nm), along with OVI lines at 103.2 and 103.8 nm. One key element to perform polarimetry measurements at these wavelengths is the need of efficient polarizers. A limitation of the available polarizers, such as crystal plates of MgF₂ and LiF working at Brewster angle, is their moderate reflectance at the non-extinguished component of the electric field, which results in a modest polarizer efficiency.

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Juan I. Larruquert, José A. Aznárez, Luis Rodríguez-de Marcos, José A. Méndez, A. Marco Malvezzi, Angelo Giglia, Paolo Miotti, Fabio Frassetto, Giuseppe Massone, Stefano Nannarone, Giuseppe Crescenzio, Gerardo Capobianco, and Silvano Fineschi "Multilayer reflective polarizers for the far ultraviolet", Proc. SPIE 8777, Damage to VUV, EUV, and X-ray Optics IV; and EUV and X-ray Optics: Synergy between Laboratory and Space III, 87771D (3 May 2013); https://doi.org/10.1117/12.2017444

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