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Time-of-flight method using multiple pulse train interference as a time recorder.

Dong Wei1, Satoru Takahashi, Kiyoshi Takamasu

  • 11Department of Precision Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan. weidong@nanolab.t.u-tokyo.ac.jp

Optics Express
|March 30, 2011
PubMed
Summary
This summary is machine-generated.

A novel optical length measurement technique combines pulse train interference and time-of-flight (TOF) methods. This new approach enables high-precision measurements for both scientific and industrial applications, as demonstrated with a gauge block.

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Area of Science:

  • Metrology
  • Optical Engineering
  • Physics

Background:

  • Accurate length measurement is crucial for scientific research and industrial manufacturing.
  • Existing methods like pulse train interference offer high accuracy but limited range, while time-of-flight (TOF) methods provide arbitrary and absolute measurements but often with lower precision.

Purpose of the Study:

  • To propose and demonstrate a novel optical length measurement method that integrates the strengths of pulse train interference and TOF techniques.
  • To achieve high-precision, arbitrary, and absolute length measurements for diverse applications.

Main Methods:

  • Development of a unique hybrid optical measurement technique: the multiple pulse train interference-based time-of-flight (TOF) method.
  • Experimental validation using the measurement of a long gauge block to showcase the method's feasibility and performance.

Main Results:

  • Successful demonstration of the proposed multiple pulse train interference-based TOF method.
  • Feasibility of high-precision length measurement for a long gauge block was confirmed using this optical technique.

Conclusions:

  • The combined pulse train interference and TOF method offers a powerful new tool for length metrology.
  • This innovative technique is suitable for demanding high-precision length measurement requirements in both scientific and industrial fields.