Easily implemented approach for the calibration of alignment and retardation errors in a channeled spectropolarimeter

doi:10.1364/ao.57.008600

CIOMP OpenIR

	Easily implemented approach for the calibration of alignment and retardation errors in a channeled spectropolarimeter
	Ju, X. P.; Yang, B.; Yan, C. X.; Zhang, J. Q.; Xing, W. H.
	2018
发表期刊	Applied Optics
ISSN	1559-128X
卷号	57 期号:29 页码:8600-8613
摘要	Calibration of the channeled spectropolarimeter is significant for the quantitative application of this instrument. In current calibration methods for a channeled spectropolarimeter, an absolute angle between the coordinate system of an auxiliary polarizer and the global coordinate system of the instrument is usually indispensable. The effectiveness of calibration depends on the precision of the absolute angle, while it is usually difficult to achieve in a practical calibration process. This paper presents an easily implemented method to simultaneously calibrate the alignment and retardation errors of high-order retarders for a channeled spectropolarimeter. In the presented method, the requirement of an absolute angle between the coordinate system of an auxiliary polarizer and the global coordinate system of the instrument is replaced by only rotating a relative angle in the coordinate system of the auxiliary polarizer itself. First, we theoretically derive the modified reconstruction model considering the alignment errors of high-order retarders. By analyzing and summarizing the modified reconstruction model, the calibration and compensation models of the alignment and retardation errors are further proposed. Then, two linearly polarized beams with a relative angle of 45 degrees between them are utilized to determine the alignment and retardation errors. Based on these results, the alignment and retardation errors can be compensated by a software correction algorithm without any precise mechanical adjustments. The effectiveness and feasibility of the presented method are verified by numerical simulations and experiments. The advantage of easy implementation makes this calibration method more suitable to apply in the laboratory and to be on track for correcting the channeled spectropolarimeter. (C) 2018 Optical Society of America
关键词	polarimetry parameters reduction noise Optics
DOI	10.1364/ao.57.008600
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60962
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Ju, X. P.,Yang, B.,Yan, C. X.,et al. Easily implemented approach for the calibration of alignment and retardation errors in a channeled spectropolarimeter[J]. Applied Optics,2018,57(29):8600-8613.
APA	Ju, X. P.,Yang, B.,Yan, C. X.,Zhang, J. Q.,&Xing, W. H..(2018).Easily implemented approach for the calibration of alignment and retardation errors in a channeled spectropolarimeter.Applied Optics,57(29),8600-8613.
MLA	Ju, X. P.,et al."Easily implemented approach for the calibration of alignment and retardation errors in a channeled spectropolarimeter".Applied Optics 57.29(2018):8600-8613.

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