Design and calibration of a high-sensitivity and high-accuracy polarimeter based on liquid crystal variable retarders | |
Jing Guo1,2![]() ![]() ![]() ![]() ![]() ![]() | |
2017-01 | |
Source Publication | Research in Astronomy and Astrophysics
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Volume | 17Issue:1Pages:8-18 |
Abstract |
Polarimetry plays an important role in the measurement of solar magnetic fields。We developed a high-sensitivity and high-accuracy polarimeter (HHP) based on nematic liquid crystal variable retarders (LCVRs), which has a compact setup and no mechanical moving parts。The system design and calibration methods are discussed in detail. The azimuth error of the transmission axis of the polarizer as well as the fast axes of the two LCVRs and the quarter-wave plate were determined using dedicated procedures。Linearly and circularly polarized light were employed to evaluate the performance of the HHP。The experimental results indicate that a polarimetric sensitivity of better than 5.7 × 10-3 can be achieved by using a single short-exposure image, while an accuracy on the order of 10-5 can be reached
by using a large number of short-exposure images。This makes the HHP a high-performance system that can be used with a ground-based solar telescope for high-precision solar magnetic field investigations。 |
Keyword | Polarimeters Laboratory Magnetic Fields Polarimetric |
Subject Area | 天文技术与方法 |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.niaot.ac.cn/handle/114a32/1439 |
Collection | 期刊论文 |
Affiliation | 1.南京天文光学技术研究所 2.中科院天文光学技术重点实验室 3.加利福尼亚州立大学北岭分校物理与天文学院 |
Recommended Citation GB/T 7714 | Jing Guo,De-Qing Ren,Cheng-Chao Liu,et al. Design and calibration of a high-sensitivity and high-accuracy polarimeter based on liquid crystal variable retarders[J]. Research in Astronomy and Astrophysics,2017,17(1):8-18. |
APA | Jing Guo,De-Qing Ren,Cheng-Chao Liu,Yong-Tian Zhu,Jiang-Pei Dou,&Xi Zhang.(2017).Design and calibration of a high-sensitivity and high-accuracy polarimeter based on liquid crystal variable retarders.Research in Astronomy and Astrophysics,17(1),8-18. |
MLA | Jing Guo,et al."Design and calibration of a high-sensitivity and high-accuracy polarimeter based on liquid crystal variable retarders".Research in Astronomy and Astrophysics 17.1(2017):8-18. |
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