Polarization measurements on SUMI's TVLS gratings

K. Kobayashi; E. A. West; J. M. Davis; G. A. Gary

doi:10.1117/12.731870

13 September 2007 Polarization measurements on SUMI's TVLS gratings

K. Kobayashi, E. A. West, J. M. Davis, G. A. Gary

Author Affiliations +

Proceedings Volume 6682, Polarization Science and Remote Sensing III; 66820W (2007) https://doi.org/10.1117/12.731870
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

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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K. Kobayashi, E. A. West, J. M. Davis, and G. A. Gary "Polarization measurements on SUMI's TVLS gratings", Proc. SPIE 6682, Polarization Science and Remote Sensing III, 66820W (13 September 2007); https://doi.org/10.1117/12.731870

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