23 August 1996 Vibration measurement by laser diode holographic interferometry
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Proceedings Volume 2868, Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (1996) https://doi.org/10.1117/12.248661
Event: Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 1996, Ancona, Italy
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.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yukihiro Ishii, Yukihiro Ishii, } "Vibration measurement by laser diode holographic interferometry", Proc. SPIE 2868, Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (23 August 1996); doi: 10.1117/12.248661; https://doi.org/10.1117/12.248661
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