[1] [1] McCall S L, Hahn E L. Self-induced transparency. Phys. Rev., 1969, 183(2):457～485

[2] [2] Slusher R E, Gibbs H M. Self-induced transparency in atomic rubidium. Phys. Rev. (A), 1972, 5(4):1634～1959

[3] [3] Salamo G J, Gibbs H M, Churchill G G. Effects of degeneracy on self-induced transparency. Phys. Rev. Lett., 1974, 33(5):273～276

[4] [4] Gibbs H M, McCall S L, Salamo G J. Near-ideal self-induced-transparency breakup in highly degenerate systems. Phys. Rev. (A), 1975, 12(3):1032～1035

[5] [5] Grischkowsky D. Self-focusing of light by potassium vapor. Phys. Rev. Lett., 1970, 24(16):866～869

[6] [6] Boshier M G, Sandle W J. Self-focussing in a vapour of two-state atoms. Opt. Commun., 1972, 42(5):371～376

[7] [7] Gibbs H M, Bolger B, Mattar F P et al.. Coherent on-resonance self-focusing of optical pulses in absorbers. Phys. Rev. Lett., 1976, 37(26):1743～1746

[8] [8] Mattar F P. Transient propagation of optical beams in active media. Appl. Phys., 1978, 17(1):53～62

[9] [9] de Lamare J, Comte M, Kupecek Ph. Spatial distortions of laser pulses in coherent on-resonance propagation: Large-scale self-focusing. Phys. Rev. (A), 1994, 50(4):3366～3378