| 142 W高峰值功率窄线宽线偏振脉冲光纤激光器 |
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| 引用本文： | 张昆,周寿桓,李尧,张利明,余洋,张浩彬,朱辰,张大勇,赵鸿. 142 W高峰值功率窄线宽线偏振脉冲光纤激光器[J]. 红外与激光工程, 2020, 49(4): 0405003-0405003-6. DOI: 10.3788/IRLA202049.0405003 |
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| 作者姓名： | 张昆 周寿桓 李尧 张利明 余洋 张浩彬 朱辰 张大勇 赵鸿 |
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| 作者单位： | 中国电子科技集团公司第十一研究所 固体激光技术重点实验室，北京 100015 |
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| 摘 要： | 报道了一种基于主振荡功率放大(MOPA)结构工作的全光纤窄线宽线偏振纳秒脉冲光纤激光器。脉冲种子源是由一个分布反馈直腔型(DFB)单频光纤激光器被光电调制器进行强度调制后产生的。为了抑制受激布里渊散射(SBS)效应,脉宽被调节为3 ns,并且种子源线宽被相位调制器展宽为2.9 GHz。经两级保偏掺Yb3+光纤放大器放大后,获得了平均功率142 W,重复频率1 MHz,脉冲宽度2.88 ns,峰值功率49.3 kW的脉冲激光输出。在最大输出功率时,激光光束质量因子M2约为1.15,偏振消光比(PER)大于15.4 dB。
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| 关 键 词： | 光纤激光器 高峰值功率 受激布里渊散射 窄线宽 |
| 收稿时间： | 2019-12-07 |
142 W high peak power narrow-linewidth linearly polarized pulsed fiber laser |
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| Zhang Kun,Zhou Shouhuan,Li Yao,Zhang Liming,Yu Yang,Zhang Haobin,Zhu Chen,Zhang Dayong,Zhao Hong. 142 W high peak power narrow-linewidth linearly polarized pulsed fiber laser[J]. Infrared and Laser Engineering, 2020, 49(4): 0405003-0405003-6. DOI: 10.3788/IRLA202049.0405003 |
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| Authors: | Zhang Kun Zhou Shouhuan Li Yao Zhang Liming Yu Yang Zhang Haobin Zhu Chen Zhang Dayong Zhao Hong |
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| Affiliation: | Science and Technology on Solid-state Laser Laboratory, No.11th Research Institute of China Electronics Technology Group Corporation, Beijing 100015, China |
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| Abstract: | An all fiber linearly polarized narrow-linewidth nanosecond pulsed fiber laser based on master oscillator power amplifier (MOPA) structure was reported. The pulsed seed was generated by modulating a single-frequency distributed feedback (DFB) fiber laser using an electro-optic intensity modulator. In order to suppress stimulated Brillouin scattering (SBS), the pulse width was set to be 3 ns and the linewidth of seed was broadened to be 2.9 GHz by a phase modulator. After amplifying by two stages polarization maintaining Yb3+ doped fiber amplifier chain, the output pulse laser was obtained with an average power of 142 W, a repetition rate of 1 MHz, a pulse duration of 2.88 ns, corresponding to peak power of 49.3 kW. At maximum output power, the laser beam quality M2 was ～ 1.15 and the polarization extinction ratio(PER) was >15.4 dB. |
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| Keywords: | fiber laser high peak power stimulated Brillouin scattering narrow linewidth |
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