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Monte Carlo simulations of homogeneous upconversion in erbium-doped silica glasses

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2 Author(s)
Philipsen, J.L. ; Dept. of Electromagn. Syst., Tech. Univ., Lyngby, Denmark ; Bjarklev, A.

Quenching of Er3+ ions by homogeneous energy-transfer upconversion in high-concentration erbium-doped silica glasses has been theoretically investigated, The results indicate that at Er3+ concentrations of 1.0-2.0·1026 m-3 or below, the kinetic limit of strong migration is not reached, and hence the widely accepted quadratic upconversion model is not generally valid. Nevertheless, the results offer an explanation of the experimental observations of quadratic upconversion. Furthermore, it has been shown that at a given population inversion, the quenching rate depends on the rate of exchange of the excited Er3+ ions by emission and absorption

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Quantum Electronics, IEEE Journal of  (Volume:33 ,  Issue: 5 )