在掺钛蓝宝石激光器中,采用小曲率半径球面镜组成的谐振腔,得到了自锁模泵浦阈值为71OmW.最窄脉宽为15fs,输出平均功率为42mW的稳定的自锁模运转. In the Ti: sapphire laser, a self-mode-locked pump threshold of 71OmW was obtained by using a resonator composed of a small radius of curvature spherical mirror. The stable mode of self-mode locking with an average output power of 42mW was achieved with the narrowest pulse width of 15fs.