Parametric transducer for high-speed real-time acoustic imaging

22 January 1976

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 12 (2) , 44-45
https://doi.org/10.1049/el:19760035

Abstract

The letter reports the development of a novel high-speed scanning acoustic imaging system, potentially suitable for medical diagnosis, nondestructive testing and acoustic microscopy. The key element of this system is a parametric transducer, consisting of a photoconductor-piezoelectric sandwich in which the nonlinear behaviour is the basis of an optical-readout method. Preliminary measurements at 2.7 MHz have indicated that the sensitivity is better than 0.2 μW/cm², and a resolution approaching the expected limiting value of 0.7 mm has been achieved.

Keywords

ACOUSTIC MICROSCOPY
PHOTOCONDUCTOR PIEZOELECTRIC SANDWICH
NONDESTRUCTIVE TESTING
HIGH SPEED REAL TIME ACOUSTIC IMAGING
PARAMETRIC TRANSDUCER
MEDICAL DIAGNOSIS
OPTICAL READOUT METHOD

This publication has 1 reference indexed in Scilit:

Recent developments in acoustic holography and imaging
C R C Critical Reviews in Solid State Sciences, 1973