| 基于多波长类噪声脉冲的掺铒光纤激光器 |
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| 引用本文： | 王富任,王天枢,马万卓,贾青松,赵得胜,刘润民.基于多波长类噪声脉冲的掺铒光纤激光器[J].应用光学,2019,40(4):710-716. |
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| 作者姓名： | 王富任 王天枢 马万卓 贾青松 赵得胜 刘润民 |
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| 作者单位： | 1.长春理工大学 空间光电技术国家与地方联合工程研究中心，吉林 长春 130022 |
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| 基金项目： | 吉林省自然科学基金20150101044JC吉林省科技发展计划项目20170414041GH国家自然科学基金91338116 |
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| 摘 要： | 报道了一种基于多波长类噪声脉冲的被动锁模掺铒光纤激光器。采用980 nm半导体激光器作为泵浦源，2.5 m长的掺铒光纤作为增益介质。锁模机制为非线性放大环形镜(NALM)。通过自相关迹证明输出脉冲为类噪声脉冲。该类噪声脉冲的光谱3 dB带宽可达17.2 nm，边模抑制比为47.7 dB，重复频率为5.434 MHz，单脉冲能量为7.9 nJ。为了实现平坦的多波长输出，在NALM结构中加入Sagnac环干涉仪，获得了最大波长数为5的平坦多波长类噪声脉冲，平坦度为1.995。
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| 关 键 词： | 掺铒光纤激光器 多波长 类噪声 非线性放大环镜 |
| 收稿时间： | 2018-12-21 |
Multi-wavelength noise-like pulsed erbium-doped fiber laser |
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| Affiliation: | 1.National and Local Joint Engineering Research Center of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, China2.College of Science, Changchun University of Science and Technology, Changchun 130022, China3.College of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China |
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| Abstract: | We proposed and demonstrated a multi-wavelength noise-like pulsed passive mode-locked erbium-doped fiber laser. The 980 nm semiconductor laser was used as the pump source and the erbium-doped fiber (EDF) with length of 2.5 m was used as the gain medium. The mode-locking operation was achieved by using a nonlinear amplifier loop mirror (NALM) structure. It is proved by self-correlation trace that the output pulse is a noise-like pulse. The 3-dB bandwidth of noise-like pulse is 17.2 nm, the side mode suppression ratio is 47.7 dB, the repetition rate is 5.434 MHz and the single pulse energy is 7.9 nJ. In order to achieve flat multi-wavelength output, a Sagnac ring interferometer was added to the NALM structure, and the flat multi-wavelength noise-like pulse was obtained with the number of maximum wavelength of 5 and the flatness of 1.995. |
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