Ly-alpha polarimeter design for CLASP rocket experiment
classification
🌌 astro-ph.IM
astro-ph.SRphysics.optics
keywords
clasply-alphamgf2polarimeterpolarizationaiminganalyzerbeam
read the original abstract
A sounding-rocket program called the Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) is proposed to be launched in the summer of 2014. CLASP will observe the solar chromosphere in Ly-alpha (121.567 nm), aiming to detect the linear polarization signal produced by scattering processes and the Hanle effect for the first time. The polarimeter of CLASP consists of a rotating half-waveplate, a beam splitter, and a polarization analyzer. Magnesium Fluoride (MgF2) is used for these optical components, because MgF2 exhibits birefringent property and high transparency at ultraviolet wavelength.
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