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首页> 外文期刊>Optics Letters >Intensity-noise suppression in 1950-nm single-frequency fiber laser by bidirectional amplifier configuration
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Intensity-noise suppression in 1950-nm single-frequency fiber laser by bidirectional amplifier configuration

机译：通过双向放大器配置在1950-NM单频光纤激光器中强度噪声抑制

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摘要

In this Letter, a bidirectional amplifier configuration suppressing the relative intensity noise in a 1950-nm linearly polarized single-frequency fiber laser (SFFL) is proposed. The scheme to amplify the signal in a nonlinear saturated amplification regime with low gain distribution for suppressing the RIN is theoretically analyzed. By optimizing the input power level and reflectivity of the bidirectional power-amplifier, the RIN is decreased maximally by >24 dB within the frequency range of 200 kHz. A stable output power of over 5.16 W with a polarization extinction ratio of 21.2 dB is obtained. Additionally, the amplified signal maintains a linewidth of 7.1 kHz nearly identical with that of the seed, both with a signal-to-noise ratio of more than 60 dB. This all-optical technique on noise suppression applied to the fiber amplifier paves the way to realize low-noise SFFL with power improvement. (C) 2020 Optical Society of America
机译：在该字母中，提出了一种双向放大器配置，抑制了1950-nm线性偏振的单频光纤激光器（SFF1）中的相对强度噪声。 理论上分析了具有低增益分布的非线性饱和扩增调节信号中的该方案进行了用于抑制rin的低增益分布。 通过优化双向动力放大器的输入功率电平和反射率，载体在200kHz的频率范围内最大化> 24dB在最大程度上降低。 获得偏振消光比为21.2dB的稳定输出功率。 另外，放大的信号与种子的线宽保持几乎与种子的线宽，既具有60dB以上的信噪比。 施加到光纤放大器的噪声抑制的这种全光技术铺平了实现电力改进的低噪声SFFL的方式。 （c）2020美国光学学会

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  • 来源
    《Optics Letters》 |2020年第19期|共4页
  • 作者

    Guan Xianchao; Yang Changsheng; Lin Wei; Zhao Qilai; Tan Tianyi; Gu Quan; Zhou Kaijun; Wei Xiaoming; Yang Zhongmin; Xu Shanhui;

  • 作者单位

    South China Univ Technol Sch Phys &

    Optoelect Guangzhou 510640 Peoples R China;

    South China Univ Technol State Key Lab Luminescent Mat &

    Devices Guangzhou 510640 Peoples R China;

    South China Univ Technol Sch Phys &

    Optoelect Guangzhou 510640 Peoples R China;

    South China Univ Technol State Key Lab Luminescent Mat &

    Devices Guangzhou 510640 Peoples R China;

    South China Univ Technol State Key Lab Luminescent Mat &

    Devices Guangzhou 510640 Peoples R China;

    South China Univ Technol State Key Lab Luminescent Mat &

    Devices Guangzhou 510640 Peoples R China;

    South China Univ Technol State Key Lab Luminescent Mat &

    Devices Guangzhou 510640 Peoples R China;

    South China Univ Technol Sch Phys &

    Optoelect Guangzhou 510640 Peoples R China;

    South China Univ Technol Sch Phys &

    Optoelect Guangzhou 510640 Peoples R China;

    South China Univ Technol Sch Phys &

    Optoelect Guangzhou 510640 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
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