用３ｍｍ长的钛宝石短棒和改进的非对称Ｚ型折叠腔结构进行自锁模实验，以石英棱镜对作为腔内色散补偿元件，在５Ｗ氩离子激光泵浦下，实现低阈值泵浦自锁模运转。在腔内不加任何调制元件的情况下实现软光阑锁模，获得最短脉冲宽度为１５ｆｓ，光谱宽度为８０ｎｍ，输出平均功率４００ｍＷ。 Self-mode-locking experiment was carried out with a 3mm long titanium bar and an improved asymmetric Z-folded cavity structure. The quartz prism was used as an intracavity dispersion compensation element to pump a low threshold pumped by a 5W Argon laser Mode-locked operation. The soft diaphragm was mode-locked without any modulating element in the cavity, the shortest pulse width was 15fs, the spectral width was 80nm and the average output power was 400mW.