| 303MHz高重复频率掺Er光纤飞秒激光器 |
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| 引用本文： | 刘欢,巩马理,曹士英,林百科,方占军.303MHz高重复频率掺Er光纤飞秒激光器[J].物理学报,2015,64(11):114210-114210. |
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| 作者姓名： | 刘欢 巩马理 曹士英 林百科 方占军 |
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| 作者单位： | 1. 清华大学精密仪器系, 激光与光子技术研究室, 北京 100084;2. 中国计量科学研究院, 时间频率计量研究所, 北京 100029 |
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| 基金项目： | 清华大学自主科研计划(批准号:20131089299),质检公益性行业科研专项(批准号:201310007),北京高等学校青年英才计划(批准号:YETP0087)和精密测试技术及仪器国家重点实验室开放基金(批准号:pil1201)资助的课题. |
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| 摘 要： | 高重复频率掺Er光纤飞秒激光器在光学频率梳、超高速光学采样等领域具有很重要的作用. 本文采用非线性偏振旋转锁模机理, 在掺Er光纤飞秒激光器中实现了重复频率为303 MHz的锁模脉冲输出. 通过优化腔内色散, 激光器腔内色散在零色散附近偏负值, 锁模后工作在展宽脉冲锁模状态. 在817 mW抽运功率下, 激光器在连续光状态下可以输出125 mW的平均功率, 在锁模状态下可以输出69 mW的平均功率, 脉冲宽度为90 fs. 当抽运功率处于700-817 mW时, 激光器可以实现自启动锁模. 激光器重复频率在5 h内的漂移量为30 Hz.
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| 关 键 词： | 掺Er光纤激光器 光纤光学频率梳 光学频率计量 |
| 收稿时间： | 2014-10-10 |
A 303 MHz fundamental repetition rate femtosecond Er:fiber ring laser |
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| Liu Huan,Gong Ma-Li,Cao Shi-Ying,Lin Bai-Ke,Fang Zhan-Jun.A 303 MHz fundamental repetition rate femtosecond Er:fiber ring laser[J].Acta Physica Sinica,2015,64(11):114210-114210. |
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| Authors: | Liu Huan Gong Ma-Li Cao Shi-Ying Lin Bai-Ke Fang Zhan-Jun |
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| Institution: | 1. Center for Photonics and Electronics, Department of Precision Instrument, Tsinghua University, Beijing 100084, China;2. Division of Time and Frequency Metrology, National Institute of Metrology, Beijing 100029, China |
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| Abstract: | High-repetition-rate fiber laser has widely applications in the field of femtosecond frequency comb, ultra-fast optical sampling, and so on. In this paper, an Er-doped femtosecond fiber laser with a repetition rate of 303 MHz is demonstrated based on the mechanism of nonlinear polarization rotation. By means of optimization of cavity dispersion, the net dispersion in fiber cavity is a little negative nearby zero point. After mode locking, the laser is operating in the stretched-pulse regime. At a pump power of 817 mW, the output power of the laser is 125 mW in continue-wave state, and 69 mW in mode-locking state. The laser directly generates 90 fs before dispersion compensation. Mode locking can self-start at the pump power of 700-817 mW. Repetition rate drift of the mode-locked laser is 30 Hz in five hours. |
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| Keywords: | Er:fiber femtosecond laser fiber optical frequency comb optical frequency metrology |
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