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2 July 1998 Multiphonon transitions and heating effects in Er:YAG laser rods
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Proceedings Volume 3405, ROMOPTO '97: Fifth Conference on Optics; (1998) https://doi.org/10.1117/12.312816
Event: ROMOPTO '97: Fifth Conference on Optics, 1997, Bucharest, Romania
Abstract
In this paper we discuss the heat produced by the non-radiative (multiphonon) transitions in Er:YAG laser rods, during the optical pumping, using the mathematical modeling. Three energy transfer processes (up-conversion from 4I15/2, up- conversion from 4I13/2, and cross-relaxation from 4S3/2) are included in the rate equations. The main result of our simulation is that for usual optical pump conditions (Xenon flash-lamp, pumping pulse duration 200 - 300 microsecond(s) ) more than 50% of the absorbed energy is lost as heat in the active medium and only a small fraction (approximately 1%) is lost as fluorescent emission.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Serban Georgescu and Voicu Lupei "Multiphonon transitions and heating effects in Er:YAG laser rods", Proc. SPIE 3405, ROMOPTO '97: Fifth Conference on Optics, (2 July 1998); https://doi.org/10.1117/12.312816
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