Imaging of laser-induced thermo-elastic stress in biotissues with shadowgraph

Alexander I. Omelchenko; Emil N. Sobol

doi:10.1117/12.780094

19 May 2008 Imaging of laser-induced thermo-elastic stress in biotissues with shadowgraph

Alexander I. Omelchenko, Emil N. Sobol

Proceedings Volume 7000, Optical and Digital Image Processing; 700015 (2008) https://doi.org/10.1117/12.780094
Event: SPIE Photonics Europe, 2008, Strasbourg, France

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.

Citation Download Citation

Alexander I. Omelchenko and Emil N. Sobol "Imaging of laser-induced thermo-elastic stress in biotissues with shadowgraph", Proc. SPIE 7000, Optical and Digital Image Processing, 700015 (19 May 2008); https://doi.org/10.1117/12.780094

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