光电反馈抑制DBR单纵模光纤激光器的弛豫振荡噪声

doi:10.3969/j.issn.1007-5461.2023.05.006

量子电子学报 ›› 2023, Vol. 40 ›› Issue (5): 677-683.doi: 10.3969/j.issn.1007-5461.2023.05.006

光电反馈抑制DBR单纵模光纤激光器的弛豫振荡噪声

刘元煌 1,2, 魏珊珊 2, 陈雨君 1,2, 姚波 2, 毛庆和 1,2*

( 1 中国科学技术大学环境科学与光电技术学院, 安徽合肥 230026; 2 中国科学院合肥物质科学研究院安徽光学精密机械研究所光子器件与材料安徽省重点实验室, 安徽合肥 230031 )

收稿日期:2021-04-02 修回日期:2021-05-15 出版日期:2023-09-28 发布日期:2023-09-28
通讯作者: E-mail: mqinghe@aiofm.ac.cn E-mail:E-mail: mqinghe@aiofm.ac.cn
作者简介:刘元煌 ( 1995 - ), 海南澄迈人, 研究生, 主要从事单纵模光纤激光器方面的研究。 E-mail: liuyh39@mail.ustc.edu.cn
基金资助:
国家重点研发计划 (2017YFB0405100, 2017YFB0405200), 中国科学院战略性先导科技专项 (B 类) (XDB21010300), 国家自然科学基金 (61805258, 61377044), 先进激光技术安徽省实验室主任基金 ( 20191001), 安徽省科技重大专项 (201903a07020021)

Relaxation oscillation noise suppression in a DBR single⁃longitudinal⁃mode fiber laser using optoelectronic feedback

LIU Yuanhuang 1,2, WEI Shanshan 2, CHEN Yujun 1,2, YAO Bo 2, MAO Qinghe 1,2*

( 1 School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China; 2 Anhui Provincial Key Laboratory of Photonics Devices and Materials, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China )

Received:2021-04-02 Revised:2021-05-15 Published:2023-09-28 Online:2023-09-28

摘要/Abstract

摘要： 报道了使用光电反馈法对 1.5 μm 分布式布拉格反射 (DBR) 单纵模光纤激光器强度噪声的抑制结果。通过分析光纤激光器的泵浦扰动到激光输出功率波动的传递函数, 发现其相频响应在弛豫振荡频率处有180°相位突变。因此，依据已有的商用比例积分 (PI) 控制电路设计并构建了一阶移相网络，在弛豫振荡频率处提供45°超前相位以补偿该频率处的相位突变。采用该反馈控制系统，可将激光器的弛豫振荡峰由 −95 dB/Hz 降至 −125 dB/Hz，抑制幅度高达30 dB。抑制后的光纤激光器有望在精密测量等应用中发挥重要作用。

关键词: 激光技术, 弛豫振荡噪声, 光电反馈, 单纵模, 光纤激光器

Abstract: The suppression of intensity noise in a 1.5 μm distributed Bragg reflector (DBR) singlelongitudinal- mode fiber laser using optoelectronic feedback was reported. By analyzing the transfer function from the pump disturbance to the output power fluctuation, it was found that the phase of the fiber laser has a 180° phase mutation at the relaxation oscillation frequency. Therefore, a first-order phase-shifting network, which can provide a 45° lead phase at the relaxation oscillation frequency to compensate for the phase mutation at that frequency, was designed and constructed based on an existing commercial proportional integral (PI) control circuit. With the designed feedback control system, the relaxation oscillation peak of the laser was reduced from −95 dB/Hz to −125 dB/Hz, the suppression amplitude was as high as 30 dB. The suppressed fiber laser is expected to play an important role in applications such as precision measurement.

Key words: laser techniques, relaxation oscillation noise, optoelectronic feedback, single longitudinal mode, fiber laser

中图分类号:

TN242

刘元煌 , 魏珊珊 , 陈雨君 , 姚波 , 毛庆和 , . 光电反馈抑制DBR单纵模光纤激光器的弛豫振荡噪声[J]. 量子电子学报, 2023, 40(5): 677-683.

LIU Yuanhuang , WEI Shanshan , CHEN Yujun , YAO Bo , MAO Qinghe , . Relaxation oscillation noise suppression in a DBR single⁃longitudinal⁃mode fiber laser using optoelectronic feedback[J]. Chinese Journal of Quantum Electronics, 2023, 40(5): 677-683.

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光电反馈抑制DBR单纵模光纤激光器的弛豫振荡噪声

Relaxation oscillation noise suppression in a DBR single⁃longitudinal⁃mode fiber laser using optoelectronic feedback

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