[1] K. Dou, E. T. Knobbe, R. L. Parkhill, and Y. Wang, IEEE J. Sel. Top. Quantum Electron. 6, 689 (2000).

[2] K. Dou, R. L. Parkhill, J. Wu, and E. T. Knobbe, IEEE J. Sel. Top. Quantum Electron. 7, 567 (2001).

[3] K. Dou, E. T. Knobbe, R. L. Parkhill, B. Irwin, L. Matthews, and K. H. Church, Appl. Phys. A 76, 303(2003).

[4] X. Wu, T. Jia, F. Zhao, M. Huang, H. Chen, N. Xu, and Z. Xu, Acta Opt. Sin. (in Chinese) 27, 105 (2007).

[5] Z. Han, C. Zhou, and E. Dai, Chin. Opt. Lett. 6, 619 (2008).

[6] T.-H. Her, R. J. Finlay, C. Wu, S. Deliwala, and E. Mazur, Appl. Phys. Lett. 73, 1673 (1998).

[7] T.-H. Her, R. J. Finlay, C. Wu, and E. Mazur, Appl. Phys. A 70, 383 (2000).

[8] Q. Wu, Y. Ma, R. Fang, Y. Liao, Q. Yu, X. Chen, and K. Wang, Appl. Phys. Lett. 82, 1703 (2003).

[9] N. Yasumaru, K. Miyazaki, and J. Kiuchi, Appl. Phys. A 76, 983 (2003).

[10] T. Q. Jia, F. L. Zhao, M. Huang, H. X. Chen, J. R. Qiu, R. X. Li, Z. Z. Xu, and H. Kuroda, Appl. Phys. Lett. 88, 111117 (2006).

[11] A. Y. Vorobyev and C. Guo, Phys. Rev. B 72, 195422 (2005).

[12] A. Y. Vorobyev and C. Guo, Opt. Express 14, 2164 (2006).

[13] A. Y. Vorobyev, V. S. Makin, and C. Guo, J. Appl. Phys. 101, 034903 (2007).

[14] A. Y. Vorobyev and C. Guo, Appl. Phys. A 86, 321 (2007).

[15] I. N. Zavestovskaya, A. P. Kanavin, and N. A. Men'kova, J. Opt. Technol. 75, 353 (2008).

[16] N. M. Bulgakova and I. M. Bourakov, Appl. Surf. Sci. 197-198, 41 (2002).

[17] R. Kelly and A. Miotello, Appl. Surf. Sci. 96-98, 205 (1996).

[18] C. Cheng and X. Xu, Appl. Phys. A 79, 761 (2004).

[19] C. Cheng and X. Xu, Phys. Rev. B 72, 165415 (2005).

[20] L. V. Zhigilei, Appl. Phys. A 76, 339 (2003).

[21] P. T. Mannion, J. Magee, E. Coyne, G. M. O'Connor, and T. J. Glynn, Appl. Surf. Sci. 233, 275 (2004).

[22] Q. Lu, Phys. Rev. E 67, 016410 (2003).

[23] M. L. Trudeau, D. Dube, and M. Fiset, Nanostr. Mater. 9, 221 (1997).