Measurement and suppression of forward stray light for spaceborne gravitational wave detection

doi:10.37188/CO.2022-0251

CIOMP OpenIR

	Measurement and suppression of forward stray light for spaceborne gravitational wave detection
	R.-K. Leng; S. Wang; Z. Wang; Z.-W. Chen and C. Fang
	2023
发表期刊	Chinese Optics
ISSN	20971842
卷号	16 期号:5 页码:1081-1088
摘要	In the spaceborne gravitational wave interferometric detection, the problem of stray light has received long-term attention. The laser light emitted by the local interferometer produces backward coherent stray light when passing the telescope while the radiation from space that is incident to the spacecraft produces forward incoherent stray light. Forward incoherent stray light has received less attention at this point, but it is a necessary factor of gravitational-wave telescope design. Therefore, this paper studies stray light produced by space gravitational wave telescopes in orbit. First, the annual solar angle is calculated according to the orbital data of the three-star satellite formation of the Taiji Project, and the solar radiation around the 1 064 nm band is evaluated. The baffle shadowing function is derived, which satisfies the requirement for the baffle design. The telescope is then modeled optically and mechanically and scatter measurements are conducted for critical optical components. Finally, the stray light reaching the pupil of the telescope is determined based on the energy of the incident sunlight. The results show that when the angle between the incident light and the optical axis is 60°, the stray radiation at the exit pupil is 3.9×10−12 W, and the corresponding point source transmittance is 8.7×10−9 which meets the requirement for space gravitational waves to detect extremely low levels of stray light. © 2023 Editorial Office of Chinese Optics. All rights reserved.
DOI	10.37188/CO.2022-0251
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收录类别	ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67596
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	R.-K. Leng,S. Wang,Z. Wang,et al. Measurement and suppression of forward stray light for spaceborne gravitational wave detection[J]. Chinese Optics,2023,16(5):1081-1088.
APA	R.-K. Leng,S. Wang,Z. Wang,&Z.-W. Chen and C. Fang.(2023).Measurement and suppression of forward stray light for spaceborne gravitational wave detection.Chinese Optics,16(5),1081-1088.
MLA	R.-K. Leng,et al."Measurement and suppression of forward stray light for spaceborne gravitational wave detection".Chinese Optics 16.5(2023):1081-1088.

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