21 October 2004 Modeling of a green upconversion pumped Er:YAG laser
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Proceedings Volume 5581, ROMOPTO 2003: Seventh Conference on Optics; (2004); doi: 10.1117/12.582818
Event: ROMOPTO 2003: Seventh Conference on Optics, 2003, Constanta, Romania
Abstract
Mathematical modeling is used to estimate the characteristics of the upconversion-pumped Er:YAG laser emitting in green function of the erbium concentration, reflectivity of the coupling mirror and co-doping. Besides the excited-state absorption, cooperative upconversion processes as well as cross-relaxation are included in our model. The main drawback of the Er:YAG system is the presence of a parasitic absorption at the emission wavelength, originating from the 4I13/2 level. The results of our simulations suggest that the highest efficiency could be obtained for an erbium concentration of 5 at.% and a reflectivity of the coupling mirror 0.94. Tentative reducing the population of the 4I13/2 level by co-doping would have a weak but negative influence.
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Serban Georgescu, Ovidiu Toma, "Modeling of a green upconversion pumped Er:YAG laser", Proc. SPIE 5581, ROMOPTO 2003: Seventh Conference on Optics, (21 October 2004); doi: 10.1117/12.582818; https://doi.org/10.1117/12.582818
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KEYWORDS
Erbium

Upconversion

Er:YAG lasers

Mirrors

Absorption

Erbium lasers

Mathematical modeling

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