[1] M.-H. Chiu and D.-C. Su, Appl. Opt. 36, 7104 (1997).

[2] Z. Ge and M. Takeda, Appl. Opt. 42, 6859 (2003).

[3] S.-F. Wang, M.-H. Chiu, C.-W. Lai, and R.-S. Chang, Appl. Opt. 45, 6702 (2006).

[4] D. Zheng, X. Wang, and F. Tang, Chin. Opt. Lett. 5, 403 (2007).

[5] D. Zheng, X. Wang, Z. Li, F. Tang, and Y. Bu, Chinese J. Lasers (in Chinese) 34, 1255 (2007).

[6] P. Shi and E. Stijns, Appl. Opt. 27, 4342 (1988).

[7] T. Bosch, N. Servagent, and S. Donati, Opt. Eng. 40, 20 (2001).

[8] M. Wang and G. Lai, Opt. Commun. 238, 237 (2004).

[9] Y. Ding, S. Zhang, Y. Li, J. Zhu, W. Du, and R. Suo, Opt. Eng. 42, 2225 (2003).

[10] G. Giuliani, S. Donati, M. Passerini, and T. Bosch, Opt. Eng. 40, 95 (2001).

[11] M. Wang, Opt. Laser Technol. 33, 409 (2001).

[12] D. Guo, M. Wang, and S. Tan, Opt. Express 13, 1537 (2006).