[1] [1] Burnet N H, Corkum P B. Cold-plasma production for recombination extreme-ultraviolet lasers by optical-field-induced ionization. J. Opt. Soc. Am. (B), 1989, 6(6):1195～1199

[2] [2] Penetrante B M, Bardsley J N. Residual energy in plasmas produced by intense subpicosecond lasers. Phys. Rev. (A), 1991, 43(6):3100～3113

[3] [3] Pulsifer P, Apruzerse J P, Davis J et al.. Residual energy and its effect on gain in a lyman-laser. Phys. Rev. (A), 1994, 49(5):3958～3965

[4] [4] Fittinghoff D N. Optical Field Ionization of Atoms and Ions Using Ultrashort LaserPulse. Livermore: University of California [Ph. D Thesis]. 1993. 94～105