Title

Real-time Frequency-translated Holographic Visualization of SAW Interactions with Surface-breaking Defects

Document Type

Article

Publication Date

2002

Publication Source

Optics Letters

Abstract

A real-time, frequency-translated holographic imaging system has been developed by use of bacteriorhodopsin film. The system provides a capability for imaging surface acoustic waves and has been utilized to detect and characterize surface-breaking defects through near-field ultrasonic scattering effects. Frequency-plane filtering was used to discriminate between ultrasonic standing-wave and near-field scattering features, dramatically enhancing the holographic visualization of the defect sites. A detailed description of the system is presented, along with representative holographic images showing the interaction of surface acoustic waves with surface-breaking cracks and small notches in aluminum and titanium substrates.

Inclusive pages

1025-1027

ISBN/ISSN

0146-9592

Publisher

Optical Society of America

Volume

27

Issue

12

Peer Reviewed

yes