Heterodyne speckle imager for simultaneous observation of 3 degrees of vibrational freedom

James Perea; Brad Libbey

doi:10.1364/CLEO_SI.2016.STu4H.7

Conference on Lasers and Electro-Optics
OSA Technical Digest (2016) (Optica Publishing Group, 2016),
paper STu4H.7
•https://doi.org/10.1364/CLEO_SI.2016.STu4H.7

Heterodyne speckle imager for simultaneous observation of 3 degrees of vibrational freedom

James Perea and Brad Libbey

CLEO: Science and Innovations 2016

San Jose, California United States
5–10 June 2016
ISBN: 978-1-943580-11-8

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Physical and Fiber-based Sensing (STu4H)

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J. Perea and B. Libbey, "Heterodyne speckle imager for simultaneous observation of 3 degrees of vibrational freedom," in Conference on Lasers and Electro-Optics, OSA Technical Digest (2016) (Optica Publishing Group, 2016), paper STu4H.7.

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Abstract

A heterodyne speckle imaging sensor has demonstrated the measurement of three-degrees of vibrational freedom simultaneously. Axial velocity is measured by demodulation, surface velocity gradients are determined by observing speckle translation following extraction from mixed signals.

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