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利用光纤飞秒光频梳和外腔可调谐半导体激光器, 建立了一套双频He-Ne激光器频率测量系统. 选用铷钟作为系统的频率基准, 通过将外腔半导体激光锁定至光频梳使得其频率溯源至铷钟, 再利用外腔可调谐半导体激光与双频He-Ne激光器输出的正交偏振激光拍频, 同时测量两路正交偏振激光频率. 将可调谐半导体激光器锁定至光频梳第1894449个梳齿, 其绝对频率为473612190000.0±2.7 kHz, 相对不确定度为5.7×10-12. 对商品双频He-Ne激光器进行频率测量实验, 双频He-Ne激光器水平方向偏振激光频率均值为473612229934 kHz, 竖直方向偏振激光频率均值为473612232111 kHz, 平均时间为1024 s的相对Allan标准差为5.2×10-11, 频差均值为2.177 MHz, 标准偏差为2 kHz.A frequency measurement system for dual frequency He-Ne laser is set up based on a fiber femtosecond optical frequency comb and an external cavity diode laser. Using a Rb clock as a frequency standard, the diode laser that is locked to the optical frequency comb is traced to the Rb clock, and then the frequencies of the orthogonal polarized lasers are measured by beating with the locked diode laser at the same time. Locking the diode laser to the 1894449 th comb mode, the absolute frequency of the diode laser is 473612190000.0 ± 2.7 kHz, with a relative frequency uncertainty of 5.7×10-12. A commercial dual frequency He-Ne laser is measured to test the system, and the results show that the mean absolute frequencies of the horizontal polarized laser and the vertical polarized laser are 473612229934 kHz and 473612232111 kHz, respectively, with a relative Allan deviation of 5.2×10-11 at 1024 s, and the mean split frequency is 2.177 MHz with a standard deviation of 2 kHz.
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Keywords:
- measurement /
- laser frequency /
- optical frequency comb /
- dual frequency laser
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[1] Zhang S L 2005 Principles of Orthogonal Polarized Laser (Beijing: Tsinghua University Press) pp41-46 (in Chinese) [张书练 2005 正交偏振激光原理 (北京: 清华大学出版社) 第41-46页]
[2] Quinn T J 2003 Metrologia 40 103
[3] Jones D J, Diddams S A, Ranka J K, Stenz A, Windler R S, Hall J L, Cundiff S T 2000 Science 288 635
[4] Udem T, Holzwarth R, Hansch T W 2002 Nature 416 233
[5] Li T C, Fang Z J 2011 Chin. Sci. Bull. 56 709 (in Chinese) [李天初, 方占军 2011 科学通报 56 709]
[6] Madej A A, Bernard J E, Robertsson L, Ma L S, Zucco M, Windeler R S 2004 Metrologia 41 152
[7] Ma L S, Robertsson L, Picard S, Chartier J M, Karlsson H, Prieto E, Windeler R S 2003 IEEE Trans. Instrum. Meas. 52 232
[8] Lea S N, Rowley W R, Margolis H S, Barwood G P, Huang G, Gill P, Chartier J M, Windeler R S 2003 Metrologia 40 84
[9] Yi L, Yuan J, Qi X H, Chen W L, Zhou D W, Zhou T, Zhou X J, Chen X Z 2009 Chin. Phys. B 18 1409
[10] Fang Z J, Wang Q, Wang M M, Meng F, Lin B K, Li T C 2007 Acta Phys. Sin. 56 5684 (in Chinese) [方占军, 王强, 王民明, 孟飞, 林百科, 李天初 2007 56 5684]
[11] Cao S Y, Cai Y, Wang G Z, Meng F, Zhang Z G, Fang Z J, Li T C 2011 Acta Phys. Sin. 60 080601 (in Chinese) [曹士英, 蔡岳, 王贵重, 孟飞, 张志刚, 方占军, 李天初 2011 60 080601]
[12] Meng F, Cao S Y, Cai Y, Wang G Z, Cao J P, Li T C, Fang Z J 2011 Acta Phys. Sin. 60 100601 [孟飞, 曹士英, 蔡岳, 王贵重, 曹建平, 李天初, 方占军 2011 60 100601]
[13] Han H N, Zhang W, Wang P, Li D H, Wei Z Y, Shen N C, Nie Y X, Zhang S G, Li S Q 2007 Acta Phys. Sin. 56 2760 (in Chinese) [韩海年, 张炜, 王鹏, 李德华, 魏志义, 沈乃澈, 聂玉昕, 张首钢, 李师群 2007 56 2760]
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