Power scaling of end-pumped Nd:YLF lasers, modeling and experiments

Numerical modeling simulations are carried out to analyze and study the thermal effects in Nd:YLF laser crystals. The distributions of temperature and stress in the Nd:YLF laser rods are calculated with finite element (FE) simulations for different rod geometries and pump powers. The FE simulations...

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Bibliographic Details
Published in:Optik (Stuttgart) 2017-07, Vol.140, p.584-591
Main Authors: El-Agmy, R.M., Al-Hosiny, N.
Format: Article
Language:English
Subjects:
Solid state lasers
Thermally induced lens
Wavefront sensors
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Summary:Numerical modeling simulations are carried out to analyze and study the thermal effects in Nd:YLF laser crystals. The distributions of temperature and stress in the Nd:YLF laser rods are calculated with finite element (FE) simulations for different rod geometries and pump powers. The FE simulations that were carried out showed that using thinner Nd:YLF rod would lead to scale the power by 50% before the limits imposed by the thermally induced stress is reached. Also, we have investigated the generation of strong negative thermally induced lens for π- polarizations. The calculations of thermally induced lens in Nd:YLF laser rod is validated experimentally. Shack-Hartmann wavefront sensor was used for direct measurements of thermal lenses at different pump power. The obtained measurements were coinciding with the (FE) simulations.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2017.04.087