TEMPORAL-MODULATION OF A LASER SOURCE FOR THE GENERATION OF ULTRASONIC-WAVES

Authors
PIERCE R UME C JARZYNSKI J
Citation
R. Pierce et al., TEMPORAL-MODULATION OF A LASER SOURCE FOR THE GENERATION OF ULTRASONIC-WAVES, Ultrasonics, 33(2), 1995, pp. 133-137
Citations number
18
Categorie Soggetti
Acoustics,"Radiology,Nuclear Medicine & Medical Imaging
Journal title
Ultrasonics → ACNP
ISSN journal
0041624X
Volume
33
Issue
2
Year of publication
1995
Pages
133 - 137
Database
ISI
SICI code
0041-624X(1995)33:2<133:TOALSF>2.0.ZU;2-0
Abstract
Ultrasound is generated in an aluminium test block using a pulsed Nd:Y AG laser. The laser beam is modulated at high frequencies using an aco usto-optic modulator. Ultrasound is detected using piezoelectric trans ducers. Frequency spectra of ultrasound generated by modulated and unm odulated laser beams are compared. Signals generated by modulated beam s are found to have greater amplitude and a narrowed bandwidth around the modulation frequency.