High-precision long-distance measurement using a frequency comb of a femtosecond mode-locked laser

被引:6
|
作者
Matsumoto, H [1 ]
Minoshima, K [1 ]
Telada, S [1 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058563, Japan
关键词
distance measurement; long-length standards; femto-comb frequency; mode-locked laser;
D O I
10.1117/12.505422
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
High-accuracy long-distance measurement is performed using a broad and stable femtosecond frequency comb. Cyclic-error, which has been the main source of inaccuracy in conventional measurements, is reduced more than tenfold, directly achieving high accuracies of 50 mu m at 1-GHz frequency and 14 mu m at 10-GHz frequency in a 240-m distance measurement using the phase measurement of intermode beats of a femtosecond frequency comb. Traceability of distance meters is discussed.
引用
收藏
页码:308 / 315
页数:8
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