Dynamic process of self-started self-mode-locked Ti:sapphire laser with a semiconductor saturable absorber mirror

✍ Scribed by Ching-yue Wang; Yong Wang; Lu Chai; Weili Zhang; Qirong Xing; Zhigang Zhang

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 100 KB
• Volume: 33
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/s0030-3992(00)00122-5

✦ Synopsis

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 s was needed during which pure passive mode-locking 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 e ect of the SESAM dominates the dynamic process.