Abstract
The response of a focused film transducer to wideband acoustic signals is studied both theoretically and experimentally. The transducer has the form of a narrow PVDF strip placed on a concave cylindrical surface. A software package is developed for calculating the impulse transient response functions depending on the position of the point source of spherical waves. The experiments are performed using laser thermooptical sources of acoustic spherical wave pulses excited by a pulsed diode-pumped Nd: YAG laser. The theoretical and measured temporal profiles of signals recorded by the transducer are shown to be in good agreement for the source positioned near the transducer’s focus. For this region, a transducer sensitivity map is investigated. For the case of the source positioned at the focus of the transducer, the absolute value of the transducer sensitivity is 8 µV/Pa.
Similar content being viewed by others
References
R. A. Kruger, D. R. Reinecke, and G. A. Kruger, Med. Phys. 26(9), 1832 (1999).
V. G. Andreev, A. A. Karabutov, S. V. Solomatin, et al., Proc. SPIE 3916, 36 (2000).
P. R. Stepanishen, J. Acoust. Soc. Am. 70, 1176 (1981).
V. G. Andreev, A. A. Karabutov, A. E. Ponomaryov, and A. A. Oraevsky, Proc. SPIE 4618, 153 (2002).
J. A. Jensen, J. Acoust. Soc. Am. 105, 3266 (1999).
I. N. Kanevskii, Focusing of Sonic and Ultrasonic Waves (Nauka, Moscow, 1977).
G. Kino, Acoustic Waves. Devices, Imaging, and Analog Signal Processing (Prentice Hall, Englewood Cliffs, N.J., 1987; Mir, Moscow, 1990).
A. A. Karabutov, V. V. Kozhushko, I. M. Pelivanov, and G. S. Mityurich, Akust. Zh. 47, 890 (2001) [Acoust. Phys. 47, 721 (2001)].
L. M. Lyamshev, Laser Thermooptical Excitation of Sound (Nauka, Moscow, 1989).
V. É. Gusev and A. A. Karabutov, Laser Photoacoustics (Nauka, Moscow, 1991).
Author information
Authors and Affiliations
Additional information
__________
Translated from Akusticheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Zhurnal, Vol. 49, No. 6, 2003, pp. 799–805.
Original Russian Text Copyright © 2003 by Zharinov, Karabutov, Kozhushko, Pelivanov, Solomatin, Khokhlova.
Rights and permissions
About this article
Cite this article
Zharinov, A.N., Karabutov, A.A., Kozhushko, V.V. et al. Wideband focused film transducer for optoacoustic tomography. Acoust. Phys. 49, 682–687 (2003). https://doi.org/10.1134/1.1626180
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.1626180