We use Gires Tournois interferometer as a means of providing negative GVD to compensate positive GVD of Ti:sapphire rod. Stable ps self mode locked pulse has been obtained. Birefrigent filter is used in the cavity to realized wavelength tunable. This kind of ps self mode locked Ti:sapphire laser which uses G T interferometer as a high reflective mirror is of low insertion loss, pulse duration and wavelength tunable.