[1] [1] Nemoto S. Nonparaxial Gaussian beams[J]. Appl. Opt., 1990, 29(13): 1940-1946.

[2] [2] Laabs H. Propagation of Hermite-Gaussian-beams beyond the paraxial approximation [J]. Opt. Commun., 1998,147(1/3): 1-4.

[4] [4] Porras M A. Finiteness and propagation law of the power density second-order moment for diffracted scalar light beam [J]. Optik, 1999, 110(9): 417-420.

[5] [5] Casperson L W, Hall D G, Tovar A A. Sinusoidal-Gaussian beams in complex optical systems [J]. J. Opt. Soc.Am. A, 1997, 14(12): 3341-3348.

[6] [6] LüB D, et al. Propagation properties of cosh-Gaussian beams [J]. Opt. Commun., 1999, 164(6): 165-170.

[7] [7] Mandel L, Wolf E. Optical Cohrence and Quantum Optics [M]. New York: Cambridge U. Press, 1995. 113.

[8] [8] Cao Q, Deng X M. Power carried by scalar light beams [J]. Opt.Commun., 1998, 151(6):212-216.

[9] [9] LüB D, Luo S R. Beam propagation factor of hard-edge diffracted cosh-Gaussian beams [J]. Opt.Commun.,2000, 178(5): 275-281.