Photoacoustic Doppler axial flow measurement of homogenous media using structured illumination


Conference Paper

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. © 2014 SPIE.

Full Text

Duke Authors

Cited Authors

  • Zhang, R; Yao, J; Maslov, KI; Wang, LV

Published Date

  • January 1, 2014

Published In

Volume / Issue

  • 8943 /

International Standard Serial Number (ISSN)

  • 1605-7422

International Standard Book Number 13 (ISBN-13)

  • 9780819498564

Digital Object Identifier (DOI)

  • 10.1117/12.2038356

Citation Source

  • Scopus