Absolute length measurement with the frequency comb of a femtosecond laser

被引：88
|
作者：
Hyun, Sangwon [1 ]
Kim, Young-Jin [1 ]
Kim, Yunseok [1 ]
Jin, Jonghan [1 ]
Kim, Seung-Woo [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Ultrafast Opt Ultraprecis Technol Grp, Taejon 305701, South Korea
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2009年 / 20卷 / 09期
基金：
新加坡国家研究基金会;
关键词：
absolute distance measurement; frequency comb; interferometry; DISTANCE MEASUREMENT; REFRACTIVE-INDEX; PULSE LASER; INTERFEROMETRY; CLOCK; GENERATOR; RANGE; LONG; AIR;
D O I：
10.1088/0957-0233/20/9/095302
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report exploiting the frequency comb of a femtosecond laser as a means of realizing the time-based SI definition of the meter for length metrology. Specifically, an external-cavity diode laser is continuously tuned to a stabilized frequency comb, and its output frequency is modulated over an extensive range to measure the absolute value of a given length by means of multi-wavelength optical interferometry. This approach could find applications in establishing practical length standards with a small amount of uncertainty directly traceable to time standards.
引用
收藏
页数：6
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