Freiburg 2024 – scientific programme

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A: Fachverband Atomphysik

A 15: Poster I

A 15.3: Poster

Tuesday, March 12, 2024, 17:00–19:00, Tent A

Photonic Insights into Tissue Thermal Responses: A Numerical Analysis Based on a Two-Temperature Model (TTM) — •Hristina Delibašić Marković¹, Violeta Petrović¹, Konstantinos Kaleris^2,3, and Ivan Petrović⁴ — ¹Faculty of Science, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia — ²Institute of Plasma Physics and Lasers, Hellenic Mediterranean University, Tria Monastiria, 74100 Rethymo, Greece — ³Physical Acoustics and Optoacoustics Laboratory, Music Technology and Acoustics Dept., Hellenic Mediterranean University, 74100 Rethymno, Greece — ⁴Academy of Professional Studies Šumadija, Department in Kragujevac, Serbia

In this research, we investigate the thermal response of tissue to intense laser pulses using the two-temperature model. This model is pivotal for analyzing heat conduction in both vascular and extravascular regions, crucial in laser-tissue interaction studies. It effectively differentiates between blood and tissue temperatures, incorporating a coupling factor and phase lag times essential for accurate predictions under laser exposure. These parameters are closely linked to the physical properties of blood and tissue, the convective heat transfer coefficient, and the blood perfusion rate. Employing the finite difference method, we address this complex problem, and our findings elucidate the tissue's thermal behavior during laser interaction and its susceptibility to optical breakdown. This work significantly contributes to our understanding of laser-tissue dynamics, offering important insights in the field of atomic and molecular physics.

Keywords: laser-tissue Interaction; two-temperature model; optical breakdown