[1] C. Monroe, H. Robinson, and C. Wieman, Opt. Lett. 16, 50 (1991).
[2] S. Tremine, S. Guerandel, D. Holleville, A. Clairon, and N. Dimarcq, IEEE International Ultrasonics, Ferroelectrics, and Frequency Control Joint 50th Anniversary Conference 65 (2004).
[3] M. A. Kasevich, E. Riis, S. Chu, and R. G. DeVoe, Phys. Rev. Lett. 63, 612 (1989).
[4] A. Ashkin, Phys. Rev. Lett. 40, 729 (1978).
[5] W. D. Phillips and H. Metcalf, Phys. Rev. Lett. 48, 596 (1982).
[6] S. Chu and C. Wieman, J. Opt. Soc. Am. B 6, 2020 (1989).
[7] S. Chu, L. Hollberg, J. E. Bjorkholm, A. Cable, and A. Ashkin, Phys. Rev. Lett. 55, 48 (1985).
[8] S. Chu, J. E. Bjorkholm, A. Ashkin, and A. Cable, Phys. Rev. Lett. 57, 314 (1986).
[9] E. L. Raab, M. Prentiss, A. Cable, S. Chu, and D. E. Pritchard, Phys. Rev. Lett. 59, 2631 (1987).
[10] J. Lu, X. Ji, Q. Zhou, and J. Yin, Acta Opt. Sin. (in Chinese) 28, 211 (2008).
[11] Y. Jia, B. Zhong, and J. Yin, Chin. Opt. Lett. 6, 848 (2008).
[12] D. E. Pritchard, E. L. Raab, V. Bagnato, C. E. Wieman, and R. N. Watts, Phys. Rev. Lett. 57, 310 (1986).
[13] C. Monroe, W. Swann, H. Robinson, and C. Wieman, Phys. Rev. Lett. 65, 1571 (1990).
[14] K. E. Gibble, S. Kasapi, and S. Chu, Opt. Lett. 17, 526 (1992).
[15] Y. Z. Wang, in Proceedings of the National Symposium on Frequency Standard (1979).
[16] W. Ketterle, A. Martin, M. A. Joe, and D. E. Pritchard, Phys. Rev. Lett. 69, 2483 (1992).
[17] H. Chen, W. Cai, L. Liu, F. Li, and Y. Wang, Chin. Phys. Lett. 11, 541 (1994).
[18] E. Guillot, P.-E. Pottie, and N. Dimarcq, Opt. Lett. 26, 1639 (2001).
[19] H.-D. Cheng, W.-Z. Zhang, H.-Y. Ma, L. Liu, and Y.-Z. Wang, Phys. Rev. A 79, 023407 (2009).
[20] W.-Z. Zhang, H.-D. Cheng, L. Liu, and Y.-Z. Wang, Phys. Rev. A 79, 053804 (2009).
[21] W.-Z. Zhang, H.-D. Cheng, L. Xiao, L. Liu, and Y.-Z. Wang, Opt. Express 17, 2892 (2009).