Title :
Pyroelectric imaging of defects in bulk acoustic wave lithium niobate transducers
Author :
Royer, D. ; Dieulesaint, E. ; Kummer, P.
Author_Institution :
Université Pierre et Marie Curie, Laboratoire d´Acoustoélectricité, Paris, France
Abstract :
Initial results on a method for testing piezoelectric transducers made of a polar material are presented. The method consists of measuring the voltage induced across the transducer electrodes by an intensity-modulated laser beam scanning the surface. Applied to a bulk acoustic wave LiNbO3 transducer, this technique has revealed domains with Z-axis reversed.
Keywords :
lithium compounds; measurement by laser beam; piezoelectric transducers; pyroelectricity; testing; voltage measurement; Z-axis reversed domains; bulk acoustic wave LiNbO3 transducer; defects; induced voltage measurement; intensity-modulated laser beam; piezoelectric transducers; polar material; pyroelectric imaging; surface scanning; testing;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840403
