3 March 2014 Photoacoustic Doppler axial flow measurement of homogenous media using structured illumination
Author Affiliations +
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.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ruiying Zhang, Ruiying Zhang, Junjie Yao, Junjie Yao, Konstantin I. Maslov, Konstantin I. Maslov, Lihong V. Wang, 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); doi: 10.1117/12.2038356; https://doi.org/10.1117/12.2038356
PROCEEDINGS
6 PAGES


SHARE
Back to Top