[1] [1] R J Rafac, B C Young, J A Beall, et al.. Sub-dekahertz ultraviolet spectroscopy of 199Hg+[J]. Physical Review Letters, 2000, 85(12): 2462-2465.

[2] [2] H Müller, S Herrmann, T Schuldt, et al.. Offset compensation by use of amplitude-modulated sidebands in optical frequency standards [J]. Opt Lett, 2003, 28(22): 2186-2188.

[3] [3] B Willke. Stabilized lasers for advanced gravitational wave detectors[J]. Laser & Photonics Reviews, 2010, 4(6): 780-794.

[4] [4] Han Yashuai, Wen Xin, Bai Jiandong, et al.. Laser frequency stabilization of 1560 nm laser after frequency doubling to 780 nm with a waveguide: Radio-frequency frequency-modulation spectroscopy versus modulation transfer spectroscopy with Rb atoms[J]. Acta Physica Sinica, 2014, 34(5): 0530002.

[5] [5] Lin Baike, Cao Shiying, Zhao Yang, et al.. A compact iodine-stabilized solid-state laser at 532 nm[J]. Chinese J Lasers, 2014, 41(9): 0902002.

[6] [6] B J Bloom, T L Nicholson, J R Williams, et al.. An optical lattice clock with accuracy and stability at the 10-18 level[J]. Nature, 2014, 506(7486): 71-75.

[7] [7] M Takamoto, F L Hong, R Higashi, et al.. An optical lattice clock[J]. Nature, 2005, 435(7040):321-324.

[8] [8] E D Black. An introduction to Pound-Drever-Hall laser frequency stabilization[J]. American Journal of Physics, 2001, 69(1): 79-87.

[9] [9] N C Wong, J L Hall. Servo control of amplitude modulation in frequency-modulation spectroscopy: Demonstration of shot-noise-limited detection[J]. J Opt Soc Am B, 1985, 2(9): 1527-1533.

[10] [10] Jiang Yanyi. Narrow linewidth lasers: Application to optical clocks[D]. Shanghai: East China Normal University, 2012.

[11] [11] G C Bjorklund, M D Levenson, W Lenth, et al.. Frequency modulation (FM) spectroscopy[J]. Applied Physics B, 1983, 32(3): 145-152.

[12] [12] M Romagnoli, M D Levenson, G C Bjorklund. Frequency-modulation-polarization spectroscopy[J]. Opt Lett, 1983, 8(12): 635-637.

[13] [13] M D Levenson, W E Moerner, D E Horne. FM spectroscopy detection of stimulated Raman gain[J]. Opt Lett, 1983, 8(2): 108-110.

[14] [14] L Li, F Liu, C Wang, et al.. Measurement and control of residual amplitude modulation in optical phase modulation[J]. Review of Scientific Instruments, 2012, 83(4): 043111.

[15] [15] E A Whittaker, H Grebel, H Lotem, et al.. Reduction of residual amplitude modulation in frequency-modulation spectroscopy by using harmonic frequency modulation[J]. J Opt Soc Am B, 1988, 5(6): 1253-1256.

[16] [16] S Kasapi, S Lathi, Y Yamamoto. Sub- shot- noise frequency- modulation spectroscopy by use of amplitude- squeezed light from semiconductor lasers[J]. J Opt Soc Am B, 2000, 17(2): 275-279.

[17] [17] F Du Burck, O Lopez, A E Basri. Narrow-band correction of the residual amplitude modulation in frequency-modulation spectroscopy [J]. Instrumentation and Measurement, IEEE Transactions on, 2003, 52(2): 288-291.

[18] [18] Deng Yongkai, Li Ye, Cao Jianping. Suppression of fluctuation of residual amplitude modulation in electro-optical phase modulators[J]. Acta Physica Sinica, 2006, 26(7): 1063-1068.

[19] [19] Chen Yuhua, Jiang Yanyi, Bi Zhiyi. Suppression of residual amplitude modulation in electro-optical phase modulators using Fabry-Perot cavity[J]. Acta Physica Sinica, 2007, 27(10): 1877-1882.

[20] [20] L Ye, L Yige, W Qiang, et al.. A hertz-linewidth ultrastable diode laser system for clock transition detection of strontium atoms[J]. Chinese Physics Letters, 2014, 31(2): 24207-24210.