采用飞秒光纤激光同步泵浦的自启动锁模钛宝石激光研究  

Self-starting mode-locking Ti:sapphire oscillator synchronously pumped by femtosecond fiber laser

作　　者：宋海声[1] 刘宇平 滕浩[2,3] 于洋 冯小天 邵晓东 吕仁冲 韩海年 朱江峰[4] 魏志义 Song Haisheng;Liu Yuping;Teng Hao;Yu Yang;Feng Xiaotian;Shao Xiaodong;Lü Renchong;Han Hainian;Zhu Jiangfeng;Wei Zhiyi(School of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,China;Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Material Laboratory,Dongguan 523808,China;School of Physics and Optoelectronic Engineering,Xidian University,Xi'an 710071,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]西北师范大学物理与电子工程学院,兰州730070 [2]中国科学院物理研究所,北京凝聚态物理国家实验室,北京100190 [3]松山湖材料实验室,广东东莞523808 [4]西安电子科技大学物理与光电工程学院,西安710071 [5]中国科学院大学物理科学学院,北京100049

出　　处：《强激光与粒子束》2021年第11期76-80,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(12034020);国家重点研发计划项目(2018YFB1107201);综合极端条件实验装置项目。

摘　　要：针对常规连续激光泵浦钛宝石激光振荡器不能自启动锁模的缺点,采用倍频飞秒光纤激光同步泵浦,通过调节振荡器腔长与泵浦腔长匹配,实现了飞秒钛宝石激光的自启动锁模。实验中采用3.4 W的倍频掺镱光纤激光同步泵浦钛宝石激光振荡器,获得了平均功率大于130 mW、重复频率75 MHz、光谱宽度大于47 nm、脉冲宽度17 fs的锁模脉冲输出,不仅能够稳定可靠地实现自启动锁模,解决了常规钛宝石激光振荡器锁模启动的困难,而且还具有同步输出1040,800,520 nm三束飞秒激光的特点,为进一步开展飞秒激光相干合成以及光参量放大等研究提供了优势基础。We demonstrated a self-starting mode-locked Ti:sapphire laser by using a synchronously pumping scheme with a frequency doubled femtosecond Yb fiber laser.By carefully adjusting the cavity length of the Ti:sapphire oscillator to match the fiber laser,the mode-locking operation can start automatically.In the experiment,a femtosecond ytterbium-doped fiber laser at 520 nm was used to pump the Ti:sapphire laser synchronously.Under the 3.4 W pump power,130 mW/17 fs mode locked laser pulses were obtained from the Ti:sapphire laser at the repetition rate of 75 MHz.It not only solves the difficulty of conventional Ti:sapphire oscillator for no-starting mode locking,but also synchronously supplies three femtosecond laser beams at central wavelengths of 1040,800 and 520 nm,which paved an advanced way for further studies of coherent combination and optical parametric amplification.

关 键 词：同步泵浦 钛宝石飞秒振荡器 飞秒光纤激光 锁模自启动 

分 类 号：TN248[电子电信—物理电子学]