光纤飞秒光学频率梳的研制及绝对光学频率测量  

Study of the femtosecond fiber comb and absolute optical frequency measurement

作　　者：孟飞[1] 曹士英[1] 蔡岳[2] 王贵重[2] 曹建平[1] 李天初[1] 方占军[1] 

机构地区：[1]中国计量科学研究院,信息与电子计量科学和测量技术研究所,北京100013 [2]北京大学信息科学技术学院,量子电子学研究所,北京100871

出　　处：《物理学报》2011年第10期125-131,共7页Acta Physica Sinica

基　　金：国家重大科学研究计划(批准号:2010CB922902)资助的课题~~

摘　　要：实验利用商品光纤飞秒激光器,自行构建了一套完整的光学频率梳系统,并获得了约30dB信噪比的系统频移(fceo)信号.实现了光频梳重复频率(frep)信号及系统频移(fceo)信号的高稳定度锁定,并通过实验验证了光频梳锁定的跟踪精度.基于此稳定光频梳完成了对1064nm碘稳频Nd:YAG固体激光器的绝对频率测量.实验结果表明,frep的跟踪精度在100s取样时间时优于3.7×10-14,测量得到的1064nm激光器绝对频率为:281630111757362Hz.这一测量结果与国际计量委员会(CIPM)给出的国际推荐值符合到不确定度之内.An optical frequency comb is built by using a commercial femtosecond laser and signal-noise（S/N） ratio of the fceo signal is obtained to be about 30 dB.Its repetition rate frequency and offset frequency are highly stable and the tracking stability is verified.An absolute frequency measurement of a 1064 nm Nd：YAG laser is realized by using this stabilized optical frequency comb.The tracking stability of the repetition rate frequency is superior to 3.7×10-14 at 100 s and the absolute frequency of the laser is 281630111757362 Hz.The experimental result is in accordance with the recommended value by International Committee of Weights Measures（CIPM）.

关 键 词：光纤光频梳 稳频 锁相技术 光学频率计量 

分 类 号：TN247[电子电信—物理电子学]