We report the 8-fs pulse generation from a Ti:sapphire oscillator by use of the broadband chirped mirrors(CM) and fused-silica prism-pair to optimize the dispersion compensation.The laser operated at a central wavelength of 780 nm with the widest bandwidth of 180 nm.The output power was 280 mW under a pump power of 3.5 W.Additionally,a distinctive feature is that the oscillator can stably operate with the saddle spectrum.This is beneficial to suppress the spectrum gain narrowing in the chirped pulse amplification system when the oscillator is used as a seed pulse source.