Author/Authors :
Xu، Dong 1979- نويسنده Nanyang Technological University, Singapore , , Jiang، Minhua نويسنده , , Zhang، Guanghui نويسنده , , Lu، Mengkai نويسنده , , Yuan، Duorong نويسنده , , Wang، Xinqiang نويسنده , , Meng، Fanqing نويسنده , , Guo، Shiyi نويسنده , , Ren، Quan نويسنده ,
Abstract :
Dynamic process of self-started self-mode-locked Ti : sapphire laser with a semiconductor saturable absorber mirror (SESAM) was investigated and two mode-locking starting processes were found in which one is fast and the other is slow. In the fast starting process, a mode-locking build-up time of about 400 mu s was needed during which pure passive modelocking process was caused by the SESAM and Kerr-lens mode-locking process arose from the nonlinearity of the Ti : sapphire gain medium. In the slow starting process, a build-up time of about several minutes was found in which temperature effect of the SESAM dominates the dynamic process.
