[1] Jung I D,Kartner F X,Matuschek N,et al.Self-starting 6.5-fs pulses from a Ti:Sapphire laser.Opt Lett 1997,22(13):1009～1011

[2] Sutter D H,Steimneyer G,Gallmann L,et al.Semiconductor saturable-sbsorber mirror-assisted Kerr-lens mode-locked Ti:sapphire producting pulses in two-cycle regime.Opt Lett,1999,24(9):631～633

[3] Ell R,Morgner U,Kartner F X,et al.Generation of 5-fs pulses and octave-spanning spectra directly from a Ti:sapphire laser.Opt Lett,2001,26(6):373～375

[5] Diels J C,Fontaine J J,McMichael I C,et al.Control and measurement of ultrashort pulse shapes(in amplitude and phase)with femtosecond accuracy.Appl Opt,1985,24(9):1270～1282

[6] McGowan C,Reid D T,Ebrahimzadeh M,et al.Femtosecond pulses tunable beyond 4μm from a KTA-based optical paramatric oscillation.Opt Comm,1997,134:186～190

[7] Raid D T,Padgett M,McGowan C,et al.Light-emitting diodes as measurement devices for femtosecond laser pulses.Opt Lett,1997,22(4):233～235