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Implementation of a Reference Interferometer for Nanodetection
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Dynamic frequency-domain interferometer for absolute distance measurements with high resolution.

Jidong Weng1, Shenggang Liu1, Heli Ma1

  • 1Laboratory for Shock Waves and Detonation Physics Research, Institute of Fluid Physics, P. O. Box 919-102, Mianyang, Sichuan 621900, China.

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|November 29, 2014
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Summary

A new dynamic frequency-domain interferometer enables precise absolute distance measurements. This innovative system utilizes photonic crystal fiber and high-speed cameras for high-resolution dynamic measurements.

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Area of Science:

  • Optics and Photonics
  • Metrology
  • Mechanical Engineering

Background:

  • Accurate absolute distance measurement is crucial in various scientific and industrial applications.
  • Existing interferometric techniques face limitations in dynamic measurement scenarios.

Purpose of the Study:

  • To introduce a novel dynamic frequency-domain interferometer for absolute distance measurement.
  • To detail the working principle and demonstrate the capabilities of the new system.

Main Methods:

  • Development of a dynamic frequency-domain interferometer.
  • Utilizing photonic crystal fiber for wide-spectrum light transmission.
  • Employing high-speed streak or frame cameras for interference stripe recording.

Main Results:

  • Demonstrated feasibility of absolute distance measurement with the new interferometer.
  • Achieved high time- and distance-resolution in preliminary measurements.
  • Successfully measured harmonic vibrations of a speaker and tip clearance changes in a rotating gear wheel.

Conclusions:

  • The developed dynamic frequency-domain interferometer is capable of high-resolution absolute distance measurements.
  • The system shows promise for applications requiring precise dynamic metrology.
  • Photonic crystal fiber and high-speed cameras are key components for this advanced interferometric system.