Weak⁃Light Phase⁃Locked Ground⁃Based Experimental Validation and Noise Analysis of the Taiji Program. Chen W, Xuerong G, Ziren L, CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG, 2025, 52(11):1101004

Taiji

Weak⁃Light Phase⁃Locked Ground⁃Based Experimental Validation and Noise Analysis of the Taiji Program. Chen W, Xuerong G, Ziren L, CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG, 2025, 52(11):1101004

by admin - Mar 24, 2026

在太极计划空间引力波探测任务中，三颗卫星组成边长为300 万公里的等边三角形编队。激光经过长距离传输后功率降至nW量级，需要使用弱光锁相技术对激光相位幅值功率进行放大反射。为探索限制弱光锁相的主要噪声源，同时为后续技术发展奠定基础，本团队在地面开展了针对太极计划的弱光锁相验证实验，给出了锁相环路的数学模型以及相关控制参数，实现了实际任务中弱光、低载噪比条件下的稳定锁相。当弱光功率约为0.49 nW、载噪比为-86 dB-Hz时，>0.02 Hz频段范围内的锁相残余误差为6×10^-5 rad/Hz^1/2，实现了针对太极计划的弱光、低载噪比条件下的弱光锁相，为后续开展全链路激光干涉测距实验奠定了基础

Link: https://www.opticsjournal.net/Articles/OJd8595d6f4f1ae871/FullText

Original Content

Weak⁃Light Phase⁃Locked Ground⁃Based Experimental Validation and Noise Analysis of the Taiji Program. Chen W, Xuerong G, Ziren L, CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG, 2025, 52(11):1101004

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