Modeling optically generated focused stress waves

Anthony J. Makarewicz; Steven R. Visuri; Richard A. London; Douglas S. Miller

doi:10.1117/12.350003

14 June 1999 Modeling optically generated focused stress waves

Anthony J. Makarewicz, Steven R. Visuri, Richard A. London, Douglas S. Miller

Proceedings Volume 3601, Laser-Tissue Interaction X: Photochemical, Photothermal, and Photomechanical; (1999) https://doi.org/10.1117/12.350003
Event: BiOS '99 International Biomedical Optics Symposium, 1999, San Jose, CA, United States

Abstract

Stress waves generated at the end of optical fibers through thermoelastic expansion have been used for several purposes, including the destruction of blood clots, the destruction of kidney and gallstones, and the induction of cell permeability changes for drug delivery. We have undertaken the modeling of stress wave propagation in an effort to optimize the stress wave effects in these therapies. In particular, we have studied techniques to focus the stress wave in order to increase the pressure magnitude for a given pulse energy and to alter the compressive/tensile pressure ratio. This study includes the effects of acoustic wavelength and focusing fiber tip shape.

Citation Download Citation

Anthony J. Makarewicz, Steven R. Visuri, Richard A. London, and Douglas S. Miller "Modeling optically generated focused stress waves", Proc. SPIE 3601, Laser-Tissue Interaction X: Photochemical, Photothermal, and Photomechanical, (14 June 1999); https://doi.org/10.1117/12.350003

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