[1] C. Y. Han, Opt. Precis. Eng. 16, 2164 (2008).

[2] J. Chang, W. He, R. Wang, and S. Feng, Chin. Opt. Lett. 9, 032201 (2011).

[3] S. Liang, J. Yang, and B. Xue, Acta Opt. Sin. 30, 3300 (2010).

[4] J. Chang, M. Zou, R. Wang, S. Feng, and M. M. Talha, Chin. Opt. Lett. 8, 1082 (2010).

[5] G. Xia, B. Qu, P. Liu, and F. Yu, Chin. Opt. Lett. 10, 081201 (2012).

[6] H. Shen, R. Zhu, and Z. Gao, Chin. Opt. Let. 11, 032201 (2013).

[7] F. Yan, D. Fan, B. Zhang, L. Yin, R. Li, and X. Zhang, Chin. Opt. Lett. 7, 534 (2009).

[8] D. L. Xue, Z. Y. Zhang, L. G. Zheng, and X. J. Zhang, Opt. -Precis. Eng. 16, 2491 (2008).

[9] F. Zhang, Opt. Precis. Eng.18, 2557 (2010).

[10] H. Chen, J. Gao, and Q. Song, Opt. Precis. Engi. 16, 381 (2008).