| 全光纤高功率被动锁模掺铥光纤激光器 |
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| 引用本文： | 何雨莲, 罗鸿禹, 李静, 等. 全光纤高功率被动锁模掺铥光纤激光器[J]. 强激光与粒子束, 2014, 26: 101013. doi: 10.11884/HPLPB201426.101013 |
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| 作者姓名： | 何雨莲 罗鸿禹 李静 李卓 李剑峰 |
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| 作者单位： | 1.电子科技大学 光电信息学院, 成都 61 0054 |
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| 基金项目： | 国家自然科学基金青年项目(61107037);国家自然科学基金面上项目(61377042);国家自然科学基金仪器专项(61327004) |
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| 摘 要： | 利用非线性光环形镜（NOLM）的可饱和吸收特性实现了可自启动的2 m全光纤高能量被动锁模掺铥光纤激光器。当泵浦功率大于3 W时,激光器工作在连续或不稳定脉冲运转状态；泵浦功率达到4.69 W后,输出为自启动锁模脉冲,重复频率4.26 MHz,中心波长2 061.5 nm,光谱半极大宽度18.1 nm,平均输出功率8.8 mW；继续增加泵浦功率到最大值7.56 W,可以得到中心波长2 062.2 nm、光谱半极大宽度17.1 nm、斜率效率为6.2%、脉冲宽度和能量分别为424 fs和65.6 nJ的稳定锁模脉冲。这是目前已报道的在未经放大情况下脉冲能量最高的2 m锁模脉冲光纤激光器。
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| 关 键 词： | 掺铥光纤激光器 锁模 非线性光环形镜 高功率 |
| 收稿时间： | 2014-01-15 |
| 修稿时间： | 2014-06-25 |
High power all-fiber passively mode-locked thulium-doped fiber laser |
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| He Yulian, Luo Hongyu, Li Jing, et al. High power all-fiber passively mode-locked thulium-doped fiber laser[J]. High Power Laser and Particle Beams, 2014, 26: 101013. doi: 10.11884/HPLPB201426.101013 |
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| Authors: | He Yulian Luo Hongyu Li Jing Li Zhuo Li Jianfeng |
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| Affiliation: | 1. School of Optoelectronic Information,University of Electronic Science and Technology of China,Chengdu 610054,China |
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| Abstract: | A self-starting 2 m a fiber passively mode-locked Tm3+-doped fiber laser based on nonlinear loop mirror (NOLM) was demonstrated. The laser operated at a continuous wave or unstable pulses regime after reaching the launched pump power of 3 W. Self-starting mode-locked pulses centered at 2 061.5 nm with an FWHM of 18.1 nm and an average output power of 8.8 mW were achieved when the launched pump power increased to 4.69 W. Continuously increasing to the maximum launched pump power of 7.56 W, stable mode-locked pulses centered at 2 062.2 nm with a FWHM of 17.1 nm were produced at a slope efficiency of 6.2%. The pulses operated at the repetition rate of 4.26 MHz with a single pulse energy up to 65.6 nJ and a pulse width of 424 fs. To the best of our knowledge, this was the first demonstration on mode-locked fiber laser based on NOLM at 2 m region with the highest single pulse energy. |
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| Keywords: | Tm3+-doped fiber laser mode-locking nonlinear loop mirror high power |
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