This paper reports an high output power,high conversion efficiency,all-solid-state,quasi-continuous-wave Ti:sapphire laser system pumped by frequency-doubled Nd:YAG laser with diode pumped laser(DPL).In the experiment,A set of Ti:sapphire resonator mirrors from 750 to 850 nm is chosen,and the transmission rate of the output mirror is 5%,10%,15% respectively.When the output power of 532 nm pump source is 27 W,the maximum of the Ti:sapphire laser output power is 6 W which tops this field so far and the higher conversion efficiency is 22.2%.