Design and Experimental Test of a Common-path Coherent-dispersion Spectrometer for Exoplanet Searches
Wei, Ruyi1,2,3; Chen, Shasha1,3,4; Hu, Bingliang1,3; Yan, Qiangqiang1,3; Wu, Yinhua5; Wang, Pengchong1,3
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
2020
卷号132期号:1007页码:8
DOI10.1088/1538-3873/ab503a
收录类别SCI
关键词instrumentation: interferometers instrumentation: spectrographs methods: data analysis techniques: radial velocities
摘要

A coherent-dispersion spectrometer (CODES) system using the radial velocity (RV) method for exoplanet searches is established in this paper. This spectrometer utilizes a new Sagnac interferometer with common-path and asymmetric designs. Compared with the traditional Michelson interferometer-based spectrometer for exoplanet detection, these designs markedly improve the stability of the optical path difference (OPD) to positional changes in optical elements or air density changes, reducing the need for active cavity stabilization. Furthermore, the asymmetric Sagnac design allows convenient separation of the two complementary outputs. In order to verify the feasibility of the CODES, an optical Doppler shift experiment is constructed in the laboratory. The RV signal was extracted by the phase shifts of the interference fringes produced by the spectrometer. The experimental results show that the obtained retrieved RV is 76.7 m s(-1), with an absolute error of 0.3 m s(-1) compared to simulated values. And the root mean square error (RMSE) and the standard deviation (STD) are 21.3 m s(-1) and 21.4 m s(-1), respectively. Error analyses show that the OPD change caused by the temperature variation is the main factor for the RMSE and STD.

资助项目National Natural Science Foundation of China[11727806] ; National Natural Science Foundation of China[11573058] ; Key Laboratory for the Structure and Evolution of Celestial Objects of CAS ; Youth Innovation Promotion Association of CAS[2015329]
项目资助者National Natural Science Foundation of China[11727806, 11573058] ; Key Laboratory for the Structure and Evolution of Celestial Objects of CAS ; Youth Innovation Promotion Association of CAS[2015329]
语种英语
学科领域天文学 ; 天文学其他学科
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6280
URL查看原文
WOS记录号WOS:000526842100002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]INTERFEROMETER ; PRECISION ; HARPS
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/23048
专题中国科学院天体结构与演化重点实验室
通讯作者Wei, Ruyi
作者单位1.Xi'an Institute of Optics Precision and Mechanic of Chinese Academy of Sciences, Xi'an 710119, People's Republic of China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
3.Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences, Xi'an 710119, People's Republic of China
4.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
5.School of Optoelectronics Engineering, Xi'an Technology University, Xi'an 710021, People's Republic of China
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GB/T 7714
Wei, Ruyi,Chen, Shasha,Hu, Bingliang,et al. Design and Experimental Test of a Common-path Coherent-dispersion Spectrometer for Exoplanet Searches[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2020,132(1007):8.
APA Wei, Ruyi,Chen, Shasha,Hu, Bingliang,Yan, Qiangqiang,Wu, Yinhua,&Wang, Pengchong.(2020).Design and Experimental Test of a Common-path Coherent-dispersion Spectrometer for Exoplanet Searches.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,132(1007),8.
MLA Wei, Ruyi,et al."Design and Experimental Test of a Common-path Coherent-dispersion Spectrometer for Exoplanet Searches".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 132.1007(2020):8.
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