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SIMULATION OF THE THERMAL FIELD DISTRIBUTION IN SOLIDS UNDER SHORT LASER PULSES IRRADIATION

M. Oane1, D. Apostol1,* , Ileana Apostol1, D. Sporea1, V. Damian1

Affiliation

  1. National Institute for Laser, Plasma and Radiation Physics, Laser Dept., P.O. Box Magurele-36, RO 76900, Bucharest, Romania

Abstract

In this paper we have developed an analytical model to study the temperature distributions in IR optical materials heated by laser pulses. Our model takes into account the two-photon absorption The calculations are based on a three dimensional model of heat diffusion in solids using the integral transform method. We find out the rigorous analytical expression of the thermal field when one considers both: one and two photon absorption. The model is valid for any laser-solid system whose interaction can be described by generalized Beer-Lambert law. Specific results are presented for an application of the model to InSb sample. We find out that two-photon absorption can produce detectable temperature variation..

Keywords

Two-photon absorption, Temperature profile, IR optical material, Computer simulation.

Submitted at: Jan. 30, 2003
Accepted at: May 8, 2003

Citation

M. Oane, D. Apostol, Ileana Apostol, D. Sporea, V. Damian, SIMULATION OF THE THERMAL FIELD DISTRIBUTION IN SOLIDS UNDER SHORT LASER PULSES IRRADIATION, Journal of Optoelectronics and Advanced Materials Vol. 5, Iss. 2, pp. 439-445 (2003)