[1] S. X. Li, G. Yu, C. Y. Zheng, and X. B. Liu, Opt. Laser. Eng. 46, 508 (2008).

[2] D. L. Shealy and F. M. Dickey, Opt. Eng. 42, 3077 (2003).

[3] Q. Li, H. Gao, Y. Dong, Z. Shen, and Q. Wang, Opt. Laser Technol. 30, 511 (1998).

[4] C. H. Zhou, J. Jia, and L. R. Liu, Opt. Lett. 28, 2174 (2003).

[5] O. Boyko, T. A. Planchon, P. Mercere, C. Valentin, and P. Balcou, Opt. Commun. 246, 131 (2005).

[6] S. Zhao and P. S. Chung, Opt. Lett. 31, 2387 (2006).

[7] S. X. Li, G. Yu, C. Y. Zheng, and Q. F. Tan, Opt. Lett. 33, 2023 (2008).

[8] O. Bryngdah, J. Opt. Soc. Am. 64, 1092 (1974).