Polarization measurements on SUMI's TVLS gratings | Zendy

K. Kobayashi | Zendy; E. A. West | Zendy; John M. Davis | Zendy; G. A. Gary | Zendy

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Polarization measurements on SUMI's TVLS gratings

Author(s) -

K. Kobayashi,

E. A. West,

John M. Davis,

G. A. Gary

Publication year - 2007

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.731870

Subject(s) - polarimeter , optics , polarization (electrochemistry) , physics , linear polarization , chromosphere , ultraviolet , diffraction grating , magnetic field , polarimetry , grating , laser , chemistry , quantum mechanics , scattering

We present measurements of toroidal variable-line-space (TVLS) gratings for the Solar Ultraviolet Magnetograph Investigation (SUMI), currently being developed at the National Space Science and Technology Center (NSSTC). SUMI is a spectro-polarimeter designed to measure magnetic fields in the solar chromosphere by observing two UV emission lines sensitive to magnetic fields, the CIV line at 155nm and the MgII line at 280nm. The instrument uses a pair of TVLS gratings, to observe both linear polarizations simultaneously. Efficiency measurements were done on bare aluminum gratings and aluminum/MgF2 coated gratings, at both linear polarizations.

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