Research on the new detection method of suppressing the skylight background based on the shearing interference and the phase modulation

doi:10.1364/oe.386752

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	Research on the new detection method of suppressing the skylight background based on the shearing interference and the phase modulation
	L. Dong and B. Wang
	2020
发表期刊	Optics Express
ISSN	1094-4087
卷号	28 期号:9 页码:12518-12528
摘要	In order to effectively suppress the effect of the skylight background on the detection performance of the optical telescope and make it have the advantages of the all-time operation and the high star-magnitude detection, a new detection method based on the shearing interference and the phase modulation is proposed in this paper. This method utilizes the discrepancy of the spatial coherence between the target (smaller size) and the skylight background (larger size). By adjusting the shearing amount reasonably, the target light can form the interference fringes, while the skylight background cannot. Then, the phase modulation technique is used to form the moving interference fringes over the detector. Afterward, the periodical electrical signal is formed by the photoelectrical conversion of the detector. Finally, the weak signal detection equipment can be used to extract the target signal from the skylight background noise. This paper introduces the scheme design and the theoretical analysis of the new detection method and also presents the detection performance simulation of this new method. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
DOI	10.1364/oe.386752
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64853
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	L. Dong and B. Wang. Research on the new detection method of suppressing the skylight background based on the shearing interference and the phase modulation[J]. Optics Express,2020,28(9):12518-12528.
APA	L. Dong and B. Wang.(2020).Research on the new detection method of suppressing the skylight background based on the shearing interference and the phase modulation.Optics Express,28(9),12518-12528.
MLA	L. Dong and B. Wang."Research on the new detection method of suppressing the skylight background based on the shearing interference and the phase modulation".Optics Express 28.9(2020):12518-12528.

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