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Proceedings Paper

Interferometric technique to measure shock-induced surface velocities in tissues for the determination of dynamic mechanical properties
Author(s): Ujwal S. Sathyam; Peter M. Celliers; Luiz Barroca Da Silva
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Paper Abstract

We present an interferometric technique to measure free surface velocities of a tissue phantom when subjected to a high power laser pulse. Such information is useful for the determination of the dynamic mechanical properties of tissues and tissue phantoms. We deliver a 4-nanosecond doubled Nd:YAG laser pulse to a tamped surface of a slab sample and probe the opposite free surface with a HeNe laser beam. The stress-wave induced motion of the rear-surface imparts a Doppler shift to the reflected HeNe probe. We monitor the Doppler shift with a velocity interferometer sensitive to velocities as low as 1 - 2 m/s.

Paper Details

Date Published: 13 May 1998
PDF: 7 pages
Proc. SPIE 3254, Laser-Tissue Interaction IX, (13 May 1998); doi: 10.1117/12.308153
Show Author Affiliations
Ujwal S. Sathyam, Lawrence Livermore National Lab. (United States)
Peter M. Celliers, Lawrence Livermore National Lab. (United States)
Luiz Barroca Da Silva, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 3254:
Laser-Tissue Interaction IX
Steven L. Jacques; Jeff Lotz, Editor(s)

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