Pulse-to-pulse alignment technique based on synthetic-wavelength interferometry of optical frequency combs for distance measurement

被引：56
|
作者：
Wu, Guanhao [1 ,2 ]
Takahashi, Mayumi [2 ,3 ]
Inaba, Hajime [2 ]
Minoshima, Kaoru [2 ,4 ]
机构：
[1] Tsinghua Univ, Dept Precis Instrument, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China
[2] Natl Inst Adv Ind Sci & Technol, NMIJ, Tsukuba, Ibaraki 3058563, Japan
[3] Tokyo Univ Sci, Noda, Chiba 2788510, Japan
[4] Univ Electrocommun, Chofu, Tokyo 1858585, Japan
来源：
OPTICS LETTERS | 2013年 / 38卷 / 12期
关键词：
LASER; LONG; AIR;
D O I：
10.1364/OL.38.002140
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A synthetic-wavelength interferometry of optical frequency combs is proposed for the pulse-to-pulse alignment in absolute distance measurement. The synthetic wavelength derived from the virtual second harmonic and the real second harmonic is used to bridge the interference intensity peak-finding method and the heterodyne interferometric phase measurement, so that the pulse-to-pulse alignment can be linked directly to single-wavelength heterodyne interferometry. The experimental results demonstrate that the distance measured by the peak-finding method with micrometer accuracy can be improved to the nanometer level by applying the method proposed. (c) 2013 Optical Society of America
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收藏
页码：2140 / 2143
页数：4
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