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Proceedings Paper

Imaging of laser-induced thermo-elastic stress in biotissues with shadowgraph
Author(s): Alexander I. Omelchenko; Emil N. Sobol
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Paper Abstract

This work presents the results of shlieren visualization of thermo-elastic stress, which is induced by laser irradiation in the bulk of tissue or tissue-like gel. This thermo-elastic stress results from water absorption of the pulses of an Er-fiber laser radiation, which produced thermal effect in irradiated zone of tissue. Imaging of laser-irradiated zone of tissue with shadowgraph and digital image processing showed that thermal stress-zone is located in the tissues at the depth of absorption of laser radiation. Digital streak camera allowed us to observe frame-by-frame growth of thermal stress in irradiated tissue. Imaging of tissue with shadowgraph presented data on stress-waves, bubbles formation during a laser pulse repetition and generation of hydrodynamic flow after a laser pulse.

Paper Details

Date Published: 19 May 2008
PDF: 8 pages
Proc. SPIE 7000, Optical and Digital Image Processing, 700015 (19 May 2008); doi: 10.1117/12.780094
Show Author Affiliations
Alexander I. Omelchenko, Institute on Laser and Information Technologies (Russia)
Emil N. Sobol, Institute on Laser and Information Technologies (Russia)


Published in SPIE Proceedings Vol. 7000:
Optical and Digital Image Processing
Peter Schelkens; Touradj Ebrahimi; Gabriel Cristóbal; Frédéric Truchetet, Editor(s)

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