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Title: Imaging polarimeters based on liquid crystal variable retarders: an emergent technology for space instrumentation
Authors: Álvarez Herrero, A.
Uribe Patarroyo, N.
García Parejo, P.
Vargas, J.
López Heredero, R.
Restrepo, R.
Martínez Pillet, V.
Del Toro Iniesta, J. C.
López, A.
Fineschi, S.
Capobianco, G.
Georges, M.
López, M.
Boer, G.
Manolis, I.
Keywords: Imaging Polarimetry;LCVRs;Liquid Crystal Variable Retarders;Remote Sensing;Solar Orbiter;Space mission
Issue Date: 9-Sep-2011
Publisher: SPIE Optical Engineering Applications
DOI: 10.1117/12.892732
Published version:
Citation: Proceedings of Polarization Science and Remote Sensing 8160: 81600Y(2011)
Abstract: The use of Liquid Crystal Variable Retarders (LCVRs) as polarization modulators are envisaged as a promising novel technique for space instrumentation due to the inherent advantage of eliminating the need for conventional rotary polarizing optics hence the need of mechanisms. LCVRs is a mature technology for ground applications; they are wellknow, already used in polarimeters, and during the last ten years have undergone an important development, driven by the fast expansion of commercial Liquid Crystal Displays. In this work a brief review of the state of the art of imaging polarimeters based on LCVRs is presented. All of them are ground instruments, except the solar magnetograph IMaX which flew in 2009 onboard of a stratospheric balloon as part of the SUNRISE mission payload, since we have no knowledge about other spaceborne polarimeters using liquid crystal up to now. Also the main results of the activity, which was recently completed, with the objective to validate the LCVRs technology for the Solar Orbiter space mission are described. In the aforementioned mission, LCVRs will be utilized in the polarisation modulation package of the instruments SO/PHI (Polarimetric and Helioseismic Imager for Solar Orbiter) and METIS/COR (Multi Element Telescope for Imaging and Spectroscopy, Coronagraph).
Description: (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
E-ISSN: 1996-756X
ISSN: 0277-786X
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