[1] [1] Kosareva O G,Kandidov V P,Brodeur A,et al. Conical emission from laser-plasma interactions in the filamentation of powerful ultrashort laser pulses in air[J].Opt Lett, 1997,22:1332-1334.

[2] [2] Woste L, Wedekind C, Wille H,et al. Femtosecond atmospheric lamp[J] .Laser Optoelektronik,1997,29: 51-53.

[3] [3] Braun A, Korn G, Liu X,et al. Self-channeling of high-peak-power femtosecond laser pulses in air[J].Opt Lett, 1995,20:73-75.

[4] [4] Henesian M,Swift C D,Murray J R. Stimulated rotational Roman scattering in nitrogen in long air paths[J].Opt Lett, 1985,10:565-567.

[5] [5] Fontaine B La,Vidal F,Jiang Z,et al. Filamentation of ultrashort pulse laser beams resulting from their propagation over long distances in air[J]. Phys, 1999, Plasma 6:1615-1621.

[6] [6] Tzortzaks S,Berge L,Couairon A,et al. Breakup and fusion of self Guided femtosecond light pulses in air[J]. Phys Rev Lett,2001,86 : 5470-5473.

[7] [7] Kasparian J,Sauerbrey R, Mondelain D,et al. Infrared extension of the supercontinuum generated by femtosecond terawatt laser pulses propagating in the atmosphere[J] .Opt Lett, 2000,25:1397-1399.

[8] [8] Yu J,Mondelain D,Ange G,et al.Backward supercontinuumemission from a filament generated by ultrashort laser pulses in air[J].Opt Lett, 2001,26: 533-535.

[9] [9] Shen Y R.The Principles of Nonlinear Optics[M].New York: Wiley, 1984.

[10] [10] Boyd R W.Nonlinear Optics[M].San Diego :Academic Press,1992.

[11] [11] Sprangle P,Esarey E,Hafizi B.Intense laser pulse propagation and stability in partially stripped plasmas[J].Phys Rev Lett, 1997,79:1046-1049.

[12] [12] Sprangle P,Esarey E,Hafizi B.Propagation and stability of intense laser pulses in partially stripped plasmas[J].Phys Rev, 1997, E56:5894-5907.

[13] [13] Sprangle P,Esarey E,Ting A.Nonlinear interaction of intense laser pulses in plasmas[J].Phys Rev, 1990 ,A41:4463-4469.