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Type of publication: Straipsnis konferencijos medžiagoje kitose duomenų bazėse / Article in conference proceedings in other databases (P1c)
Field of Science: Fizika / Physics (N002)
Author(s): Gabalis, Martynas;Girdauskas, Valdas
Title: Simulation of temperature distribution in thin active laser medium disk
Is part of: CYSENI 2010 [elektroninis išteklius] : the 7th annual conference of young scientists on energy issues, May 27-28, 2010, Kaunas, Lithuania : conference proceedings. Kaunas : LEI, 2010, 7
Extent: p. 331-339
Date: 2010
Keywords: Solid state laser;Temperature distribution;Thin disk laser
Abstract: In design of high average power lasers one common problem is the heat generated in the active laser medium. Heating of active medium causes undesirable changes in the parameters. Temperature gradient causes thermal stresses, which may lead to damaging of the active medium upon exceeding the threshold values. These problems can be solved by a thin disk active medium geometry: one side of the thin disk is in contact with cooler. Such composition leads to more efficient heat transfer due to the large surface area of cooler. This work discusses the problem of the heat transfer in a thin disk Nd:YAG disk medium, starting with formulation of the problem and concluding with numerical solutions: the maximum temperature of the thin disk, the cross sectional area temperature distribution dependence on thickness of the disk, absorption coefficient, incident angle and focusing of the pump beam. It will be shown that maximum temperature is attained on the surface of the disk and that focusing of pump beam results a lower increase of temperature
Affiliation(s): Fizikos katedra
Gamtos mokslų fakultetas
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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