[1] [1] Rosi1 G, Sorrentino1 F, Tino G M, et al. Precision measurement of the Newtonian gravitational constant usingcold atoms[J]. Nature, 2014, 510: 518-523.

[2] [2] Chaibi W, GeigerLow R, Bouyer P, et al. Low frequency gravitational wave detection with ground-based atom interferometer arrays[J]. Phys Rev Lett D, 2016, 93: 021101.

[3] [3] Savas Dimopoulos, Peter W G, Mark A K, et al. General relativistic effects in atom interferometry[J]. Phys Rev Lett D, 2008, 78: 042003.

[4] [4] Peters A, Chung K Y, Chu S. Measurement of gravitational acceleration by dropping atoms[J]. Nature, 1999, 400: 849-852.

[5] [5] Le Gouet J, Mehlstaubler T E, Pereira Dos Santos F, et al. Limits to the sensitivity of a low noise compact atomic gravimeter [J]. Appl Phys B, 2008, 92: 133-144.

[6] [6] Han Shunli, Wu Xin, Lin Qiang. Frequency stabilization technologies of semiconductor laser[J]. Infrared and Laser Engineering, 2013, 42(5): 1189-1193.

[7] [7] Li Haicheng, Feng Lishuang, Wang Junjie. Influence of fabry-perot cavity on frequency discrimination curvein pound-drever-hall method[J]. Infrared and Laser Engineering, 2014, 43(11): 3699-3703.

[8] [8] Long Yun, Xiong Zhuanxian, He Lingxiang, et al. Frequency locking of a 399 nm laser referenced to fluorescence spectrum of an ytterbium atomic beam[J]. Chinese Optics Letters, 2014, 12(2): 021401.

[9] [9] Zhou Tong, Qi Xianghui, Chen Xuzong, et al. Frequency-stabilized diode laser at 780 nm with a continuously locked time over 100 h[J]. Chinese Optics Letters, 2010, 8(5): 496-498.

[10] [10] Han Yashuai, Guo Shanlong, Wang Junmin, et al. Efficient frequency doubling of a telecom 1 560 nm laser in a waveguide and frequency stabilization to Rb D2 line[J]. Chinese Optics Letters, 2014, 12(12): 121401.

[11] [11] Wang Qiyu, Wang Zhaoying, Lin Qiang, et al. A compact laser system for the cold atom gravimeter [J]. Optics Communications, 2016, 358(1): 82-87.

[12] [12] Tarallo M G, Poli N, Tino G M, et al. A high-stability semiconductor laser system for an 88Sr-based optical lattice clock [J]. Appl Phys B, 2011, 103: 17-25.

[13] [13] Jiang Zhikun, Feng Yangying, Chen Shu, et al. A tunable and wide-range frequency-offset locking technology using external frequency modulation[C]//SPIE, 2015, 9671: 967104.

[14] [14] Ismail Bayrakli. Frequency stabilization at the sub-kilohertz level of an external cavity diode laser[J]. Appl Opt, 2016, 55: 2463-2466.