Real-time imaging using the INEEL Laser Ultrasonic Camera

Vance A. Deason; Kenneth L. Telschow; Gordon D. Lassahn; Scott M. Watson; Robert S. Schley

doi:10.1117/12.365769

13 October 1999 Real-time imaging using the INEEL Laser Ultrasonic Camera

Vance A. Deason, Kenneth L. Telschow, Gordon D. Lassahn, Scott M. Watson, Robert S. Schley

Proceedings Volume 3783, Optical Diagnostics for Fluids/Heat/Combustion and Photomechanics for Solids; (1999) https://doi.org/10.1117/12.365769
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

A new approach to the measurement of ultrasonic vibrations has been developed at the INEEL. This system utilizes heterodyne interferometric detection in a photorefractive material to provide real time, full field images of ultrasonic vibration amplitude and phase without scanning. The INEEL Laser Ultrasonic Camera has linear response for ultrasonic displacement (xi) < (lambda) divided by 4(pi) , approximately 45 nm displacement at a laser wavelength of 532 nm. In addition, the system exhibits flat response and narrow band detection for a broad range of vibration frequencies. The system is very robust, and has the potential for operation even in noisy industrial settings. A description of the system, representative data and several potential applications will be presented.

Citation Download Citation

Vance A. Deason, Kenneth L. Telschow, Gordon D. Lassahn, Scott M. Watson, and Robert S. Schley "Real-time imaging using the INEEL Laser Ultrasonic Camera", Proc. SPIE 3783, Optical Diagnostics for Fluids/Heat/Combustion and Photomechanics for Solids, (13 October 1999); https://doi.org/10.1117/12.365769

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