Novel non-guideway laser interferometer for absolute long distance measurement

Hong Wei Shao; Zhan Jun Fang; Qiang Wang; Fei Meng; Ming Zhen Lu; Ling Ding Zou; Xue Ping Shen; Jian Jun Cui

Novel non-guideway laser interferometer for absolute long distance measurement

Hong Wei Shao^*, Zhan Jun Fang, Qiang Wang, Fei Meng, Ming Zhen Lu, Ling Ding Zou, Xue Ping Shen, Jian Jun Cui

^*Corresponding author for this work

National Institute of Metrology China

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A novel non-guideway laser interferometer for absolute long distance measurement is presented. An external cavity diode laser (ECDL) shows great selectivity to its wavelength, with a bandwidth less than 100 kHz and a coherent distance of about 1000 m. The wavelength can be continuously tuned from 1495 nm to 1645 nm. These two characteristics enable a wavelength-tuning interferometry for absolute long distance measurement. In the interferometry for measuring the distance of L, the resolution and uncertainty could be 3 nm and 2.5 × 10^-6 L respectively, when the measuring range is about 100 m. In order to improve accuracy, exact fraction method can be applied employing several specific wavelengths. By this means, the uncertainty could be up to 5 × l0^-7 L.

Original language	English
Pages (from-to)	110-113
Number of pages	4
Journal	Jiliang Xuebao/Acta Metrologica Sinica
Volume	28
Issue number	2
Publication status	Published - Apr 2007
Externally published	Yes

Keywords

Exact fraction method
External cavity diode laser (ECDL)
Metrology
Non-guideway laser interferometer
Uncertainty

Cite this

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title = "Novel non-guideway laser interferometer for absolute long distance measurement",

abstract = "A novel non-guideway laser interferometer for absolute long distance measurement is presented. An external cavity diode laser (ECDL) shows great selectivity to its wavelength, with a bandwidth less than 100 kHz and a coherent distance of about 1000 m. The wavelength can be continuously tuned from 1495 nm to 1645 nm. These two characteristics enable a wavelength-tuning interferometry for absolute long distance measurement. In the interferometry for measuring the distance of L, the resolution and uncertainty could be 3 nm and 2.5 × 10-6 L respectively, when the measuring range is about 100 m. In order to improve accuracy, exact fraction method can be applied employing several specific wavelengths. By this means, the uncertainty could be up to 5 × l0-7 L.",

keywords = "Exact fraction method, External cavity diode laser (ECDL), Metrology, Non-guideway laser interferometer, Uncertainty",

author = "Shao, {Hong Wei} and Fang, {Zhan Jun} and Qiang Wang and Fei Meng and Lu, {Ming Zhen} and Zou, {Ling Ding} and Shen, {Xue Ping} and Cui, {Jian Jun}",

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month = apr,

language = "English",

volume = "28",

pages = "110--113",

journal = "Jiliang Xuebao/Acta Metrologica Sinica",

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T1 - Novel non-guideway laser interferometer for absolute long distance measurement

AU - Shao, Hong Wei

AU - Fang, Zhan Jun

AU - Wang, Qiang

AU - Meng, Fei

AU - Lu, Ming Zhen

AU - Zou, Ling Ding

AU - Shen, Xue Ping

AU - Cui, Jian Jun

PY - 2007/4

Y1 - 2007/4

N2 - A novel non-guideway laser interferometer for absolute long distance measurement is presented. An external cavity diode laser (ECDL) shows great selectivity to its wavelength, with a bandwidth less than 100 kHz and a coherent distance of about 1000 m. The wavelength can be continuously tuned from 1495 nm to 1645 nm. These two characteristics enable a wavelength-tuning interferometry for absolute long distance measurement. In the interferometry for measuring the distance of L, the resolution and uncertainty could be 3 nm and 2.5 × 10-6 L respectively, when the measuring range is about 100 m. In order to improve accuracy, exact fraction method can be applied employing several specific wavelengths. By this means, the uncertainty could be up to 5 × l0-7 L.

AB - A novel non-guideway laser interferometer for absolute long distance measurement is presented. An external cavity diode laser (ECDL) shows great selectivity to its wavelength, with a bandwidth less than 100 kHz and a coherent distance of about 1000 m. The wavelength can be continuously tuned from 1495 nm to 1645 nm. These two characteristics enable a wavelength-tuning interferometry for absolute long distance measurement. In the interferometry for measuring the distance of L, the resolution and uncertainty could be 3 nm and 2.5 × 10-6 L respectively, when the measuring range is about 100 m. In order to improve accuracy, exact fraction method can be applied employing several specific wavelengths. By this means, the uncertainty could be up to 5 × l0-7 L.

KW - Exact fraction method

KW - External cavity diode laser (ECDL)

KW - Metrology

KW - Non-guideway laser interferometer

KW - Uncertainty

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M3 - Article

AN - SCOPUS:34248185393

SN - 1000-1158

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EP - 113

JO - Jiliang Xuebao/Acta Metrologica Sinica

JF - Jiliang Xuebao/Acta Metrologica Sinica

IS - 2

ER -

Novel non-guideway laser interferometer for absolute long distance measurement

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Keywords

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