钛宝石激光器的多模式运转  

Multiple operating modes in Ti:sapphire laser

作　　者：朱长军[1] 贺俊芳[2] 翟学军[1] 薛兵[1] 

机构地区：[1]西安工程大学理学院物理系,陕西西安710048 [2]中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,陕西西安710119

出　　处：《红外与激光工程》2012年第10期2644-2648,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金(60978038);西安工程大学博士科研启动基金(BS0707)

摘　　要：在一台双光束泵浦的钛宝石激光器中实现了可调谐连续输出、独立自锁模、交叉锁模和多脉冲模运转式。分析了可调谐连续输出模式下两个激光腔的增益竞争,研究了飞秒和皮秒激光腔内的群速弥散、自相位调制、交叉相位调制以及自振幅调制。结果表明,可调谐连续输出模式下两个激光腔的输出主要取决于泵浦激光的功率,独立自锁模工作模式下,群速弥散和自相位调制决定了自锁模的稳定性;交叉锁模工作模式下,交叉相位调制是影响飞秒和皮秒脉冲之间同步性的主要因素。多脉冲工作模式下,脉冲自相关曲线的测量结果表明,飞秒脉冲仍然是单脉冲,而皮秒脉冲分裂为3个次脉冲。Tunable continuous output mode, independent self mode-locking mode, cross mode-locking mode and multi-pulse operating mode were achieved in a two-beam pumped Ti：sapphire laser. Gain competition between the two laser cavities for the tunable continuous output was analyzed. Group velocity dispersion, self-phase modulation, cross-phase modulation and self-amplitude modulation in the two laser cavities were studied. The results show that, in the tunable continuous output mode, the outputs from the two laser cavities are mainly determined by the pump laser power; in the independent self mode-locking mode, the stability of self mode-locking is governed largely by the group velocity dispersion and self- phase modulation; in the cross mode-locking mode, cross-phase modulation is the key factor influencing the synchronization between fs and ps pulses; in the multi-pulse operating mode, the fs pulse remains a single pulse, while the ps pulse splits into three sub-pulses.

关 键 词：双光束泵浦 钛宝石激光器 多模式运转 

分 类 号：O437[机械工程—光学工程]