[1] W. Feng, H. Lin, and L. Chen, Acta Opt. Sin. (in Chinese) 27, 1044 (2007).
[2] A. Yariv, Quantum Electronics (in Chinese) S. Liu, C. Wu, M. Wang (trans.) (Shanghai Scientific and Technical Press, Shanghai, 1982) p.93.
[3] Z. Shao, Phys. Rev. E 51, 1043 (1995).
[4] M. C. Simon and R. M. Echarri, Appl. Opt. 25, 1935 (1986).
[5] Z. Shao and C. Yi, Appl. Opt. 33, 1209 (1994).
[6] M. C. Simon, Appl. Opt. 22, 354 (1983).
[7] W. Shen and Z. Shao, Acta Opt. Sin. (in Chinese) 22, 765 (2002).