Mathematical modeling of two-photon thermal fields in laser–solid interaction |
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Authors: | Mihai Oane Dan Apostol |
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Affiliation: | Laser Department, National Institute for Laser, Plasma and Radiation Physics, P.O. Box Magurele-36, Bucharest RO 76900, Romania |
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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 (TPA). 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 the generalized Beer–Lambert law. Specific results are presented for an application of the model to ZnSe sample. We find out that TPA can produce detectable temperature variation. |
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Keywords: | Author Keywords: Two-photon absorption Temperature profiles IR optical materials |
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