We have demonstrate a tunable near-infrared KTP optical parametric oscillator that uses the CW Ti:sapphire laser output as the injection seeder and the second harmonic of a Q-switched Nd:YAG as the pump source. The linewidth of the OPO was less than 0.02 nm and the OPO can be tuned from 760 to 830 nm. The threshold of the seeder′s power density was about 0.5 W/cm2.