Homodyne and heterodyne optical interferometry for frequency dependent piezoelectric displacement measurement

Keith Delahoussaye; Ruyan Guo; Amar Bhalla

doi:10.1117/12.2066736

16 September 2014 Homodyne and heterodyne optical interferometry for frequency dependent piezoelectric displacement measurement

Keith Delahoussaye, Ruyan Guo, Amar Bhalla

Author Affiliations +

Proceedings Volume 9200, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VIII; 92001M (2014) https://doi.org/10.1117/12.2066736
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

The electromechanical coupling in piezoelectric materials has been widely studied however a unified view of this interaction as function of frequencies using different measurement techniques has not previously been available. This study examines and compares multiple optical based homodyne and heterodyne interferometry techniques for displacement measurement over a wide range of frequencies and including a comparison made by using a commercial Laser Doppler Vibrometer. Ferroelectric lead titanate PbTiO₃ with high ferroelectric strain is studied in this work. Frequency dependence of the electromechanical displacement is obtained using multiple techniques and the emphasis is given to near resonant frequency interrogations.

Citation Download Citation

Keith Delahoussaye, Ruyan Guo, and Amar Bhalla "Homodyne and heterodyne optical interferometry for frequency dependent piezoelectric displacement measurement", Proc. SPIE 9200, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VIII, 92001M (16 September 2014); https://doi.org/10.1117/12.2066736

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