Sapphire-based graphene saturable absorber for long-time working femtosecond lasers.
Sapphire-based graphene saturable absorber for long-time working femtosecond lasers.
复制标题
DOI：
10.1364/ol.39.002707
复制
发表时间：
2014-05
期刊：
影响因子：
3.6
通讯作者：
Shicai Xu;B. Man;S. Jiang;D. Feng;Saisai Gao;C. S. Chen;M. Liu;Cheng Yang;Cheng Zhang;D. Bi;Fuyan Liu;X. Meng
中科院分区：
文献类型：
--
作者：
Shicai Xu;B. Man;S. Jiang;D. Feng;Saisai Gao;C. S. Chen;M. Liu;Cheng Yang;Cheng Zhang;D. Bi;Fuyan Liu;X. Meng
报道了一种使用无金属蓝宝石基石墨烯作为可饱和吸收体的长时间工作的飞秒激光器。蓝宝石基石墨烯具有良好的非线性饱和吸收特性，适合作为超快固体激光器的SA。在中心波长为1032 nm，重复频率为66.3 MHz的条件下，获得了稳定的锁模脉冲，脉冲宽度为325fs。在泵浦功率为8.23W时，平均输出功率为1.78W，最大脉冲能量为26.8nJ，峰值功率为72.6kW。我们的工作为用锁模技术制造可靠的石墨烯SA开辟了一条简便的途径，并在制造低成本和超快激光器方面展示了令人兴奋的前景。
We report a long-time working femtosecond laser using metal-free sapphire-based graphene as a saturable absorber (SA). The sapphire-based graphene yielded excellent nonlinear saturable absorption properties and was demonstrated to be suitable as an SA for an ultrafast solid-state laser. Stable mode-locked pulses of 325 fs were obtained at a central wavelength of 1032 nm with a repetition rate of 66.3 MHz. At pump power of 8.23 W the average output power was 1.78 W and the highest pulse energy reached 26.8 nJ with a peak power of 72.6 kW. Our work opens up a facile route for making reliable graphene SA in the mode-locking technique and also displays an exciting prospect in making low-cost and ultrafast lasers.