引言1987年开始对掺钛蓝宝石激光主动锁模的研究”－’‘至今并未丧失其迫切性，这是由于该激光器可调谐其辐射波长。曾研究它的脉冲宽度与腔内元件参数及辐射波长的关系＊‘。在没有色散元件的主动锁模激光器中得到的最小脉宽为150fs［‘j。在具有色散调谐元件的激光器中，上? INTRODUCTION The study “-” of titanium-doped sapphire laser active mode-locking has not lost its urgency since 1987 due to its tunable radiation wavelength. It has been studied its pulse width and cavity components parameters and radiation Wavelength dependence * ’. The minimum pulse width obtained in an actively mode-locked laser without a dispersive element is 150 fs. In a laser with a dispersion-tuning element,