Optical design of polarimeter for Space Solar Telescope

Dongguang Wang; Guoxiang Ai; Caihong Sun; Yuanyong Deng

doi:10.1117/12.394040

28 July 2000 Optical design of polarimeter for Space Solar Telescope

Dongguang Wang, Guoxiang Ai, Caihong Sun, Yuanyong Deng

Proceedings Volume 4013, UV, Optical, and IR Space Telescopes and Instruments; (2000) https://doi.org/10.1117/12.394040
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

A one-meter Space Solar Telescope (SST) is being developed in Beijing Astronomical Observatory. This paper introduces its polarimeter that can get a polarimetric accuracy of 10^-4. By the optical design of this polarimeter we succeed in reducing the crosstalk between incident circular and linear polarization light when the polarimeter is installed in front of a birefringent filter. In this article, we select Mueller Matrix to describe the polarization characteristics of optical elements, and compare three kinds of design of polarimeter. From the error analysis we determine the orientation and retardation tolerance of the optical elements in order to control the instrumental polarization less than 10^-4. As a result of this analysis, we demonstrate the polarimeter that utilizes a rotatable polarizer and a half waveplate, which has a rotary angle of half quantity of polarizer's, is the best design for minimizing the circular crosstalk and thus is the choice for the SST Polarimeter.

Citation Download Citation

Dongguang Wang, Guoxiang Ai, Caihong Sun, and Yuanyong Deng "Optical design of polarimeter for Space Solar Telescope", Proc. SPIE 4013, UV, Optical, and IR Space Telescopes and Instruments, (28 July 2000); https://doi.org/10.1117/12.394040

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