| 一种新颖的自反馈光注入单频窄线宽光纤激光器 |
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| 引用本文： | 代志勇.一种新颖的自反馈光注入单频窄线宽光纤激光器[J].光电子．激光,2010(6):813-816. |
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| 作者姓名： | 代志勇 |
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| 作者单位： | 电子科技大学光电信息学院光电传感与信号处理重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(40774067) |
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| 摘 要： | 报道一种基于自反馈光注入的单频窄线宽光纤激光器。激光器采用线形腔结构,用高掺杂Er3+光纤作为增益介质,利用输出信号光分束反馈与腔内振荡激光干涉,形成折射率光栅与增益光栅共同作用选择纵模,获得稳定的1 549.85 nm单频窄线宽激光输出。在975 nm单模激光二极管(LD)抽运下,激光器的抽运阈值光功率为13 mW。当抽运光功率为112 mW时,最大输出信号光功率为30.6 mW,对应的光-光转换效率为27.3%,斜率效率为30.2%,信噪比大于50 dB。采用延时自外差方法测量线宽,当使用30 km单模光纤延迟线时,测量得到激光器的3 dB线宽为4.0 kHz。
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| 关 键 词： | 激光光学 光纤激光器 单频 窄线宽 |
A novel single-frequency narrow linewidth fiber laser based on self-feedback light injection |
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| DAI Zhi-yong.A novel single-frequency narrow linewidth fiber laser based on self-feedback light injection[J].Journal of Optoelectronics·laser,2010(6):813-816. |
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| Authors: | DAI Zhi-yong |
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| Affiliation: | DAI Zhi-yong,ZHANG Xiao-xia,PENG Zeng-shou,LI Jian-feng,OU Zhong-hua,LIU Yong-zhi(Key Laboratory of Optoelectronic Sensing , Information Processing,School of Optoelectronic Information,University of Electronic Science , Technology,Chengdu 610054,China) |
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| Abstract: | A single-frequency narrow linewidth fiber laser with linear laser cavity is presented and demonstrated experimentally.The moving refractive index grating and gain grating,which are induced by interfering between the feedback light from the part of output light and the lasing light in intra-cavity,are used to select laser longitudinal modes efficiently.A section high gain erbium-doped fiber(EDF) is used as gain medium and is pumped by a single mode 975 nm laser diode(LD),and a stable single-frequency laser a... |
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| Keywords: | laser optics fiber laser single-frequency narrow linewidth |
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