DocumentCode
758284
Title
Noncontacting optical generation of focused surface acoustic waves using a customised zoneplate
Author
Liu, M. ; Ho, H.P. ; Somekh, M.G. ; Weaver, J.M.R.
Author_Institution
Dept. of Electr. & Electron. Eng., Nottingham Univ., UK
Volume
31
Issue
4
fYear
1995
fDate
2/16/1995 12:00:00 AM
Firstpage
264
Lastpage
265
Abstract
The use of computer generated holographic zoneplates to enhance the generation of laser ultrasound is described. An amplitude grating capable of focusing laser light onto an arc which in turn generates a near diffraction limited focus of 82 MHz Rayleigh surface waves is also described. The application of zoneplates for ultrasonic nondestructive evaluation and imaging is considered
Keywords
Rayleigh waves; acoustic wave production; laser beam applications; surface acoustic wave devices; ultrasonic focusing; ultrasonic imaging; ultrasonic materials testing; zone plates; 82 MHz; Rayleigh surface waves; US imaging; amplitude grating; computer generated holographic zoneplates; customised zoneplate; focused surface acoustic waves; laser ultrasound generation; near diffraction limited focus; noncontacting optical generation; ultrasonic nondestructive evaluation;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19950216
Filename
375808
Link To Document