[1] Y. T. Fang, T. G. Shen, and X. L. Tan, Acta Opt. Sin. (in Chinese) 24, 1557 (2004).

[2] B. Qin, C. J. Jin, and R. H. Qin, Acta Opt. Sin. (in Chinese) 19, 239 (1999).

[3] Y. Fang, T. Shen, and X. Tan, Phys. Stat. Sol. B 241, 818 (2004).

[4] Y. Chen, Superlattices and Microstructures 22, 115 (1997).

[5] T. F. Krauss and R. M. De La Rue, Progress in Quantum Electronics 23, 51 (1999).

[6] H. Wang and Y. P. Li, Acta Phys. Sin. (in Chinese) 50, 2172 (2001).

[7] A. Khelif, B. Djafari-Rouhani, V. Laude, and M. Solal, J. Appl. Phys. 94, 7944 (2003).

[8] M. Qiu and S. He, Phys. Rev. B 61, 12871 (2000).

[9] H.-Y. Ryu, M. Notomi, and Y.-H. Lee, Phys. Rev. B 68, 045209 (2003).

[10] J.-L. Vay, Journal of Computational Physics 167, 72 (2001).