Chinese Journal of Quantum Electronics, Volume. 41, Issue 4, 649(2024)
Background noise analysis of laser interferometer for test of TDI technology on ground
Figures & Tables(7)
Fig. 1. Simplified diagram of laser interferometer for gravitational wave detection in space
Fig. 2. Simplified diagram of experimental setup for verification of the TDI technique on ground
Fig. 3. Temperature difference between two AOM crystals and its effect on interferometer measurement noise.(a) AOM crystal temperature fluctuation with time; (b) Temperature difference instability fluctuation of AOM crystal with time;(b) Influence of temperature difference between two AOM crystals on measurement noise of interferometer
Fig. 4. Fluctuation of related parameters in an interferometer based on simulated data. (a) Temperature fluctuation of baseplate over time; (b) Fluctuation of laser power over time; (c) Fluctuation of air pressure over time; (d) Fluctuation of laser frequency over time
Table 1. Temperature instability of baseplate, AOM crystal, air pressure stability, laser frequency and power stability ( length difference between interferometer arms is 5 mm )
View tableView in ArticleTable 1. Temperature instability of baseplate, AOM crystal, air pressure stability, laser frequency and power stability ( length difference between interferometer arms is 5 mm )
Averaging time /s 1 2 × 10-4 3 × 10-5 1 × 10-2 3 × 10-10 2 × 10-4 10 8 × 10-5 1 × 10-5 4 × 10-3 1 × 10-10 9 × 10-5 102 5 × 10-5 5 × 10-6 2 × 10-3 6 × 10-11 5 × 10-5 103 8 × 10-5 1 × 10-5 5 × 10-3 1 × 10-10 2 × 10-4 104 8 × 10-4 8 × 10-5 4 × 10-2 2 × 10-9 2 × 10-3
Table 2. Magnitude of the noise contribution ( length difference between interferometer arms is 5 mm )
View tableView in ArticleTable 2. Magnitude of the noise contribution ( length difference between interferometer arms is 5 mm )
Fourier frequency /mHz (Hz/
(Hz/
(Hz/
(Hz/
(Hz/
Sum of
the noise /
(Hz/
0.1 3 × 10-8 5 × 10-8 1 × 10-8 1 × 10-8 1 × 10-8 8 × 10-8 1 2 × 10-7 2 × 10-7 7 × 10-8 8 × 10-8 5 × 10-8 3 × 10-7 10 2 × 10-6 2 × 10-6 8 × 10-7 7 × 10-7 6 × 10-7 3 × 10-6 100 2 × 10-5 2 × 10-5 6 × 10-6 6 × 10-6 4 × 10-6 3 × 10-5
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Lingyun ZUO, Haosen SHI, Yuan YAO, Yanyi JIANG, Longsheng MA. Background noise analysis of laser interferometer for test of TDI technology on ground[J]. Chinese Journal of Quantum Electronics, 2024, 41(4): 649
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Received: May. 20, 2022
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Published Online: Jan. 8, 2025
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