Photoacoustic Doppler axial flow measurement of homogenous media using structured illumination

Ruiying Zhang; Junjie Yao; Konstantin I. Maslov; Lihong V. Wang

doi:10.1117/12.2038356

3 March 2014 Photoacoustic Doppler axial flow measurement of homogenous media using structured illumination

Ruiying Zhang, Junjie Yao, Konstantin I. Maslov, Lihong V. Wang

Proceedings Volume 8943, Photons Plus Ultrasound: Imaging and Sensing 2014; 89431U (2014) https://doi.org/10.1117/12.2038356
Event: SPIE BiOS, 2014, San Francisco, California, United States

Abstract

We propose time and frequency domain methods for homogenous flow measurement based on the photoacoustic Doppler effect. Excited by spatially modulated laser pulses, the flowing medium induces a Doppler frequency shift in the received photoacoustic signals. The frequency shift is proportional to the component of the flow speed projected onto the acoustic beam axis. These methods do not rely on particle heterogeneity in the medium. A red-ink phantom flowing in a tube immersed in water was used to validate the methods in both frequency and time domains.

Citation Download Citation

Ruiying Zhang, Junjie Yao, Konstantin I. Maslov, and Lihong V. Wang "Photoacoustic Doppler axial flow measurement of homogenous media using structured illumination", Proc. SPIE 8943, Photons Plus Ultrasound: Imaging and Sensing 2014, 89431U (3 March 2014); https://doi.org/10.1117/12.2038356

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