【作者】 徐昕； 冯野； 刘元山； 吴冠豪； 王屹山；

【Author】 Xu Xin;Feng Ye;Liu Yuan-shan;Wu Guan-hao;Wang Yi-shan;State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences;(State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University;

【机构】 中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室； 清华大学精密仪器系精密测试技术及仪器国家重点实验室；

【摘要】 本文研究了联动的双全保偏飞秒光纤光频梳系统。系统通过使用光延迟线,实现了单光梳重复频率可调,双光梳重复频率差可调的功能。光学部分采用了全保偏结构,提高了系统的温度稳定性和振动稳定性。系统的频率稳定度为4×10^-12@1s,相位稳定度达到5×10^-10@1s。此外,采用跟踪反馈控制的方法,实现了双飞秒光频梳频率和相位的联动,双光梳频率和相位联动的相关系数分别达到0.99和0.98。联动的全保偏双光梳系统已成功应用在了测距实验中,测量精度可达亚微米量级。更多还原

【Abstract】 The system of the linked dual frequency combs based on the polarization-maintaining femtosecond fiber laser is studied in this paper. By employing the optical delay line, the repetition frequency is tunable, as well as the repetition frequency difference between the dual frequency combs. The stability of temperature and vibration is improved because of the polarization-maintaining characteristic. The frequency stability is 4×10^-12@1s, and the phase stability is 5×10^-10@1s. Moreover, by use of two independent tracking feedback controlling circuits, the linkage between the dual frequency combs is realized. The correlation coefficients of the dual repetition frequencies and the dual carrier-envelope offset frequencies are up to 0.99 and 0.98, which indicate an ideal linkage between the dual frequency combs. The linked dual frequency combs is used in the absolute distance measurement successfully, the measurement accuracy is less than 1 μm.更多还原