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Proceedings Paper

Development of laser interferometer for a sine-approximation method
Author(s): Takashi Usuda; Eiji Furuta; Akihiro Ohta; Hidetoshi Nakano
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Paper Abstract

This paper outlines a newly developed laser interferometer for calibration of vibration and acceleration pick-ups at the National Metrology Institute of Japan. The developed laser interferometer is a homodyne, phase shifted Michelson type which has quadrature outputs. This interferometer satisfies the requirement for the sin-approximation method for vibration and acceleration pick-up calibration described in the international standard (ISO 16063-11"Methods for the calibration of vibration and shock pick-ups. Part 1 1 : Primary vibration calibration by laser interferometry"). In this report, the requested performances of the laser interferometer under ISO 16063-11 are discussed. Design concepts of the optical and electric parts to achieve those performances are described. The scope and the features of the developed laser interferometer are also verified and discussed. The developed laser interferometer can be applied for vibration calibration up to 1 m/s in velocity, in both amplitude and phase shift evaluation. The interferometer is currently used for the national standard of vibration and acceleration pick-up calibration system.

Paper Details

Date Published: 22 May 2002
PDF: 8 pages
Proc. SPIE 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2002); doi: 10.1117/12.468164
Show Author Affiliations
Takashi Usuda, National Metrology Institute of Japan (Japan)
Eiji Furuta, Akashi Corp. (United States)
Akihiro Ohta, National Metrology Institute of Japan (Japan)
Hidetoshi Nakano, National Metrology Institute of Japan (Japan)


Published in SPIE Proceedings Vol. 4827:
Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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