Modeling and numerical simulation of the infrared photoablation process

Andreas Olmes; M. Brand; M. Raible; Holger Lubatschowski; Wolfgang Ertmer; E. Baensch; G. Dziuk

doi:10.1117/12.297904

14 January 1998 Modeling and numerical simulation of the infrared photoablation process

Andreas Olmes, M. Brand, M. Raible, Holger Lubatschowski, Wolfgang Ertmer, E. Baensch, G. Dziuk

Proceedings Volume 3195, Laser-Tissue Interaction, Tissue Optics, and Laser Welding III; (1998) https://doi.org/10.1117/12.297904
Event: BiOS Europe '97, 1997, San Remo, Italy

Abstract

Photoablative tissue processing at the wavelength (lambda) approximately equals 3 micrometer is of great interest in many medical applications but not yet really understood. A mathematical model of the photoablation process using a free- running infrared laser has been developed. It includes evaporation and thermoelastic pressure generation and was solved using the finite-element-method. Simulated thermoelastic pressure transients are in good agreement with the experiment. It has been shown, that the temperature dependence of the absorption and the volumetric expansion cannot be neglected. With higher laser intensities strong recoil pressure transients (greater than or equal to 100 bar) and strong thermoelastic pressure transients due to a partially evaporation are given. For this reason a new model including large tissue expansions, tissue overheating and recoil induced pressure transients has been developed and presented.

Citation Download Citation

Andreas Olmes, M. Brand, M. Raible, Holger Lubatschowski, Wolfgang Ertmer, E. Baensch, and G. Dziuk "Modeling and numerical simulation of the infrared photoablation process", Proc. SPIE 3195, Laser-Tissue Interaction, Tissue Optics, and Laser Welding III, (14 January 1998); https://doi.org/10.1117/12.297904

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available