| 8字形主被动锁模掺Er3+光纤激光器 |
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| 引用本文： | 王肇颖,余震虹,高培良,贾东方,杨天新,葛春风,张瑞峰,丁永奎,李世忱.8字形主被动锁模掺Er3+光纤激光器[J].光学学报,2003,23(11):341-1345. |
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| 作者姓名： | 王肇颖 余震虹 高培良 贾东方 杨天新 葛春风 张瑞峰 丁永奎 李世忱 |
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| 作者单位： | 天津大学精密仪器与光电子工程学院,光电信息技术科学教育部重点实验室,天津,300072 |
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| 基金项目： | 教育部博士点基金 (19990 0 5 6 15 )，国家自然科学基金(6 9877012 )资助课题 |
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| 摘 要： | 在理论上分析了利用非线性光学环形镜作为等效可饱和吸收体压缩脉冲进行锁模的物理机制。利用8字形主被动混合锁模的结构在调制频率2．498749GHz下，在1．543μm处获得了12ps的锁模脉冲输出，对应谱宽0．22nm，时间脉宽积0．33。在抽运功率50mW情况下，输出脉冲平均功率3．715mW。在调制频率2．499344GHz、2．499114GHz和2．498999GHz时分别并获得了2～4阶幅度较为均衡的有理数谐波锁模脉冲序列。
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| 关 键 词： | 光纤激光器 非线性光学环形镜 铒离子掺杂 主被动锁模 脉冲宽度 损耗系数 |
| 收稿时间： | 2002/9/19 |
Figure-Eight Shape Actively and Passively Mode-Locked Erbium-Doped Fiber Laser |
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| Wang Zhaoying,Yu Zhenhong,Gao Peiliang,Jia Dongfang,Yang Tianxin Ge Chunfeng,Zhang Ruifeng,Ding Yongkui,Li Shichen.Figure-Eight Shape Actively and Passively Mode-Locked Erbium-Doped Fiber Laser[J].Acta Optica Sinica,2003,23(11):341-1345. |
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| Authors: | Wang Zhaoying Yu Zhenhong Gao Peiliang Jia Dongfang Yang Tianxin Ge Chunfeng Zhang Ruifeng Ding Yongkui Li Shichen |
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| Abstract: | The advantages of using NOLM as saturable absorber to compress pulse in mode-locked fiber lasers are analyzed theoretically. Experimentally the NOLM is placed in an actively mode-loked erbium-doped fibre ring laser to form a figure-eight actively and passively mode-locked fibre laser. 12 ps mode-locked pulses centered at 1.543 μm were obtained at the modulation frequency of 2.498749 GHz, with time-bandwidth product of 0.33. 3.715 mW output power is achieved with 50 mW pump power. Meanwhile, 2～4 rational harmonic(RH) mode-locked pulses with uniform amplitude were obtained at the modulation frequency of 2.499344 GHz, 2.499114 GHz, and 2.498999 GHz respectively. |
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| Keywords: | fiber laser nonlinear optical loop mirror (NOLM) active-passive mode-locking eight-figure |
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