We describe the detection of bursts of surface acoustic waves by a double-pulsed TV holography technique. We describe mathematically the long- and short-wave bursts in the output correlograms and validate theoretical results with experimental images. The use of short-wave bursts permits us to scan the surface and makes it easier to distinguish, for purposes of nondestructive testing, the disturbances produced by flaws.
© 2003 Optical Society of America
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry
(240.6690) Optics at surfaces : Surface waves
Cristina Trillo, Daniel Cernadas, Ángel F. Doval, Carlos López, Benito V. Dorrío, and José L. Fernández, "Detection of Transient Surface Acoustic Waves of Nanometric Amplitude with Double-Pulsed TV Holography," Appl. Opt. 42, 1228-1235 (2003)