An injection-locked Ti：sapphire laser is developed, with injection locking achieved using the Pound-Drever- Hall technique. By measuring the dependence of output power on the pump power with various Ti：sapphire laser parameters, we experimentally studied the influences of the ring cavity length, the focal length of the pump-laser mode-matching lens, and the output-coupler transmission on the threshold and slope efficiency. The dependence of the output power on the master laser power is also investigated. The present study provides a guideline for developing a Ti：sapphire laser with high slope efficiency and low threshold.
