首页|Experimental Study on the Lattice-End-Mirror Vibration Noise Cancellation of Ytterbium Clock Laser

Experimental Study on the Lattice-End-Mirror Vibration Noise Cancellation of Ytterbium Clock Laser

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In this paper,we describe an optical path stabilization method in order to keep the phase of the clock laser fixed during the interrogation.The phase noise along the optical path of the clock laser is extracted from the heterodyne beat signals.Then an acousto-optic modulator (AOM) driven by direct digital synthesizer (DDS) receives a feedback signal to cancel the phase noise.The experimental results show that our system can effectively suppress additional phase noise.The fractional frequency instability is dropped to 1.76×10-17 / τ at 1 s,which is improved by two orders of magnitude than before.In the case of Rabi excitation with a pulse duration T=50 ms,frequency shift is 7.9 mHz due to the feedback system relock process.For phase noise from different frequency,the system has a good suppression effect on low frequency phase noise.

ytterbium lattice clockclock laserphase noise cancellationRabi detectioninstability

YAO Jiajia、HE Lingxiang

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State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences,Wuhan 430071, Hubei, China

School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China

Supported by the National Natural Science Foundation of ChinaStrategic Priority Research Program of the Chinese Academy of Sciences

11574352XDB21030100

2020

10.19823/j.cnki.1007-1202.2020.0028

武汉大学自然科学学报(英文版)
武汉大学

武汉大学自然科学学报(英文版)

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影响因子：0.066
ISSN：1007-1202
年,卷(期)：2020.25(3)
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