| 高功率被动锁模2.0μm掺铥飞秒脉冲光纤激光器 |
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| 引用本文： | 刘江,王璞.高功率被动锁模2.0μm掺铥飞秒脉冲光纤激光器[J].中国激光,2012,39(9):902001-9. |
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| 作者姓名： | 刘江 王璞 |
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| 作者单位： | 刘江:北京工业大学激光工程研究院， 国家产学研激光技术中心， 北京 100124
王璞:北京工业大学激光工程研究院， 国家产学研激光技术中心， 北京 100124
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| 基金项目： | 国家自然科学基金(61177048)和北京市自然科学基金重点项目(KZ2011100050011)资助课题。 |
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| 摘 要： | 报道了高功率半导体可饱和吸收镜被动锁模的2.0μm掺铥飞秒脉冲光纤激光器的实验结果。该光纤激光器利用半导体可饱和吸收镜与宽带全反射镜来构成线型法布里-珀罗腔,自制的1550nm连续掺铒光纤激光器作为激光抽运源。当抽运功率为312mW时,开始得到稳定的重复频率为53MHz的锁模激光脉冲串。当抽运功率增加到472mW时,得到的最大平均输出功率为50mW,相应的最高单脉冲能量为0.94nJ;此时测得锁模激光脉冲的宽度为907fs,激光的中心波长为1939.5nm,3dB光谱带宽为4.6nm。
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| 关 键 词： | 光纤光学 光纤激光器 掺铥光纤 被动锁模 飞秒脉冲 |
| 收稿时间： | 2012/4/6 |
High-Power Passively Mode-Locked Thulium-Doped Femtosecond Fiber Laser at 2.0 μm |
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| Liu Jiang Wang Pu.High-Power Passively Mode-Locked Thulium-Doped Femtosecond Fiber Laser at 2.0 μm[J].Chinese Journal of Lasers,2012,39(9):902001-9. |
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| Authors: | Liu Jiang Wang Pu |
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| Affiliation: | Liu Jiang Wang Pu(National Center of Laser Technology,Institute of Laser Engineering,Beijing University of Technology, Beijing 100124,China) |
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| Abstract: | High pulse-energy semiconductor saturable absorber mirror passively mode-locked thulium-doped femtosecond fiber laser is reported. Based on a linear Fabry-Perot cavity by the combination of semiconductor saturable absorber mirror and broadband reflective mirror, the thulium-doped fiber is pumped by a home-made Er-doped fiber laser at 1550 nm. Stable mode-locked laser pulse train occurs at 312 mW incident pump power and the pulse repetition rate is 53 MHz in such a linear cavity configuration. When the incident pump power is 472 mW, the maximum output power is 50 mW, corresponding to the maximum single pulse energy of 0.94 nJ. The pulse width is measured to be 907 fs; the laser center wavelength and the 3 dB spectral bandwidth are 1939.5 nm and 4.6 nm, respectively. |
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| Keywords: | fiber optics fiber laser thulium-doped fiber passively mode-locked femtosecond pulse |
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