[2] A. Clairon, C. Salomon, S. Guellati. Ramsey resonance in a Zacharias fountain[J]. Europhys. Lett., 1991, 16(2): 165～170
[3] Paul D. Lett, Richard N. watts, Christoph I. Westbrook et al.. Observation of atoms laser cooled below the Doppler limit[J]. Phys. Rev. Lett., 1988, 61(2): 169～172
[4] A. Clarion, P. Laurent, G. Stantarelli et al.. A cesium fountain frequency standard: preliminary results[J]. IEEE Trans. on Inst. And Meas., 1995, 44(2): 128～131
[5] Andreas Bauch, Roland Schroder. Experimental verification of the shift of the cesium hyperfine transition frequency due to blackbody radiation[J]. Phys. Rev. Lett., 1997, 78(4): 622～625
[6] Christophs Salomon, Christian Veillet. ACES: atomic clock ensemble in space[J]. ESA Space Station Utilization Symposium, Darmstadt 1996, SP-385 295～297
[7] Kurt Gibble. Laser-cooled microgravity clocks[J]. IEEE Int. Freq. Control Symp., 1998, 52: 41～45
[8] H. G. Robinson, S. R. Jefferts, D. B. Sullivan. Design studies for a laser-cooled space clock[J]. IEEE Int. Freq. Control Symp., 1998, 52: 37～40
[13] J. E. Thomas, S. Ezekiel. Ultrahigh-resolution spectroscopy and frequency standards in the microwave and far-infrared regions using optical lasers[J]. Opt. Lett., 1981, 6(6): 298～300
[14] J. E. Thomas, P. R. Hemmer, S. Ezekiel et al.. Observation of Ramsey fringes using a stimulated, resonance Raman transition in a sodium atomic beam[J]. Phys. Rev. Lett., 1982, 48(13): 867～870
[15] A. Peters, K. Y. Chung, S. Chu. High-precision gravity measurements using atom interferometry[J]. Metrologia, 2001, 38(1): 25～61
[16] Kathryn Moler, David S. Weiss, Manc Kasevich et al.. Theoretical analysis of velocity-selective Raman transitions[J]. Phys. Rev. A, 1992, 45(1): 342～348
[17] David S. Weiss, Brenton C. Young, Steven Chu. Precision measurement of the photon recoil of an atom using atomic interferometry[J]. Phys. Rev. Lett., 1993, 70(18): 2706～2709
[18] D. S. Weiss, B. C. Young, S. Chu. Precision measurement of /mCs based on photon recoil using laser-cooled atoms and atomic interferometry[J]. Appl. Phys., 1994, B59(3): 217～253
