[1] Hercher M. J O S A,1964;54:563
[2] Chiao R Y,Garmire E,Townes C H.Phys Rev Lett,1964;13:479
[3] Zakharov V E,Shabat A B.Sov Phys JETP,1972;34:62
[4] Burak D,Nasalski W.Apll Opt,1994;33:6393
[5] 唐永林,李大义,陈建国　et　al．物理学报,1999;48:1248
[6] Tang Y L,Chen J G,Li D Y. Journal of Modern Optics,1999;46:1177