Stray Light Analysis and Suppression of Taiji Telescope for Space Gravitational Wave Detection Based on Phase Noise Requirement

doi:10.3390/app13052923

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	Stray Light Analysis and Suppression of Taiji Telescope for Space Gravitational Wave Detection Based on Phase Noise Requirement
	B. L. Sang, X. Q. Deng, W. Tao, Y. Q. Diao and W. Sha
	2023
发表期刊	Applied Sciences-Basel
卷号	13 期号:5 页码:14
摘要	The telescope is the core device for space gravitational wave detection. It is responsible for receiving signal light and emitting outgoing light simultaneously. When the high-energy outgoing laser passes through the telescope, it would produce stray light, which would interfere with the phase measurement and generate phase noise. Therefore, it is necessary to analyze and suppress the stray light of the telescope. In this paper, the requirement of point source transmittance (PST) of the Taiji telescope is obtained through theoretical derivation, which is less than 4x10(-10). Through a complete analysis of stray light, we determined that the M4 was the largest source of stray light under the condition that the roughness of each optical surface is equal, which accounted for 67.22%. We also determined the most lenient requirements for surface roughness sigma(lambda), and found that when sigma(lambda) of the M1, M2, M3, and M4 were 20 angstrom, 4 angstrom, 1 angstrom, and 1 angstrom respectively, the PST was 3.89x10(-10), which met the PST requirement. Next, we calculated the effect of particulate contamination on the PST, and based on the results of our analysis, we determined that the cleanliness level of the testing and storage environment of the Taiji telescope was better than 300. Finally, we evaluated the changes in the PST caused by the damage of micrometeoroids, and the analysis results showed that the stray light level would not change significantly during the service period of the Taiji Telescope.
DOI	10.3390/app13052923
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收录类别	sci
语种	英语
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67824
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	B. L. Sang, X. Q. Deng, W. Tao, Y. Q. Diao and W. Sha. Stray Light Analysis and Suppression of Taiji Telescope for Space Gravitational Wave Detection Based on Phase Noise Requirement[J]. Applied Sciences-Basel,2023,13(5):14.
APA	B. L. Sang, X. Q. Deng, W. Tao, Y. Q. Diao and W. Sha.(2023).Stray Light Analysis and Suppression of Taiji Telescope for Space Gravitational Wave Detection Based on Phase Noise Requirement.Applied Sciences-Basel,13(5),14.
MLA	B. L. Sang, X. Q. Deng, W. Tao, Y. Q. Diao and W. Sha."Stray Light Analysis and Suppression of Taiji Telescope for Space Gravitational Wave Detection Based on Phase Noise Requirement".Applied Sciences-Basel 13.5(2023):14.

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