Using KD(asterisk)P modulators for polarization measurements of the sun

Details Using KD(asterisk)P modulators for polarization measurements of the sun Using KD(asterisk)P modulators for polarization measurements of the sun

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1166..434w&link_type=abstract

IN: Polarization considerations for optical systems II; Proceedings of the Meeting, San Diego, CA, Aug. 9-11, 1989 (A91-21262 07

Physics

Optics

4

Crystal Optics, Magnetic Signatures, Solar Instruments, Solar Magnetic Field, Circular Polarization, Magnetic Flux, Magnetic Measurement, Optical Measurement, Optics, Potassium Phosphates, Temporal Resolution

Scientific paper

Longitudinal KD(asterisk)Ps are used in ground-based solar magnetographs to eliminate seeing effects by rapidly changing their retardation characteristics. Although one of the main applications for longitudinal KD(asteriak)Ps has been their use as a variable retarder for 'imaging' applications, an understanding of their limitations is important when developing scientific instruments that make very accurate polarization measurements. This paper discusses some of the problems associated with the use of these devices in the Marshall Space Flight Center (MSFC) vector magnetograph, including temperature, field of view errors, and electrical characteristics.

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