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Proceedings Paper

Vibration measurement by laser diode holographic interferometry
Author(s): Yukihiro Ishii
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Paper Abstract

Laser-diode (LD) interferometry based on phase-shifting techniques has been applied to holographic interferometry for measuring the vibration amplitude and phase. First the developments including a phase-shifting interferometer with a frequency-modulated LD are reviewed. Second, stroboscopic holographic interferometry by a pulse-driven laser diode gives the measurement of the vibrating amplitude at any epoch. The frequency chirp of the laser-diode pulse used for real-time stroboscopic illumination cancels the Doppler frequency shift due to the motion of a sinusoidal vibrating object.

Paper Details

Date Published: 23 August 1996
PDF: 8 pages
Proc. SPIE 2868, Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (23 August 1996); doi: 10.1117/12.248661
Show Author Affiliations
Yukihiro Ishii, Univ. of Industrial Technology (Japan)


Published in SPIE Proceedings Vol. 2868:
Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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