Abstract
The mission to detect gravitational wave in space requires a not only sophisticated but also ultra-precise laser interferometric measurement system. Within a single spacecraft, tens of interferometric beat signals are generated at the same time and they also need to be processed simultaneously. In this paper, a multi-channel phasemeter which can parallelly process the signals is constructed. The test shows that a sensitivity of 2π μrad/√Hz could be achieved in the frequency range of 0.1 to 10 Hz. We also utilize the phasemeter to evaluate the performance of a heterodyne laser interferometer.
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Liu, H., Dong, Y., Luo, Z. et al. Multi-channel phasemeter and its application in the heterodyne laser interferometry. Sci. China Technol. Sci. 58, 746–749 (2015). https://doi.org/10.1007/s11431-015-5770-y
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DOI: https://doi.org/10.1007/s11431-015-5770-y