摘要
研究并实现了一种相位锁定至超窄线宽激光的双光梳系统。实验通过将两台重复频率约为200MHz、重复频率差约为17 kHz的掺铒锁模激光器的对应梳齿,同时分别锁定到两台不同波长(1542 nm和1560 nm)的窄线宽连续激光器上,实现了相位相干且稳定度高的双光梳。锁定后单台光梳的梳齿线宽均低于5Hz(受限测试条件),两台光梳的相对线宽小于0.35Hz。该双光梳系统对于高精度光谱分析、时频传递,尤其是绝对距离测量等领域具有重要的应用价值。
A dual-comb system based on phase locking to ultra-narrow linewidth lasers is studied and implemented in this paper.Two Erbium-doped mode-locked lasers with repetition rates of about 200 MHz and repetition rate difference of about 17 kHz were simultaneously locked to two narrow-linewidth continuous wave lasers at 1542 nm and 1560 nm,respectively.Hence,dual-comb with high coherence and stability is achieved.After phase locking,the comb linewidth of a single comb is less than 5 Hz(limited by test condition),and the relative linewidth of two combs is less than 0.35 Hz.The dual comb system has important application value in high precision spectral analysis,time-frequency transmission,and especially absolute distance measurement.
作者
崔佳华
林百科
孟飞
曹士英
杨明哲
林弋戈
宋有建
胡明列
方占军
CUI Jia-Hua;LIN Bai-Ke;MENG Fei;CAO Shi-Ying;YANG Ming-Zhe;LIN Yi-Ge;SONG You-Jian;HU Ming-Lie;FANG Zhan-Jun(Key Laboratory of Opto-electronic Information Technology of the Ministry of Education,School of Precision Instruments and Opto-electronics Engineering,Tianjin University,Tianjin 300072,China;Laboratory of Optical Frequency Standard,Time and Frequency Metrology Division,National Institute of Metrology,Beijing 100029,China;Department of Precision Instrument,Tsinghua University,Beijing 100084,China;State Key Laboratory of Advanced Optical Communication Systems and Networks,Department of Electronics,Peking University,Beijing 100871,China)
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2020年第1期25-31,共7页
Journal of Infrared and Millimeter Waves
基金
国家重点研发计划(2016YFF0200201,2017YFA0304404)
国家自然科学基金(91736310)
天津市自然科学基金(18JCYBJC16900)~~
关键词
窄线宽光频梳
双光梳
相位锁定
相干性
narrow linewidth optical frequency comb
dual-comb
phase locking
coherency
