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Proceedings Paper

Effects of up-conversion energy transfer on the decay shapes of the 4F3/2 level of Nd3+ in YAG at high-pump intensities
Author(s): Voicu Lupei; B. Diaconescu; Aurelia Lupei
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Paper Abstract

Experimental data presents a pump intensity dependence of the 4F3/2Nd3+ level emission in various hosts; these effects were assigned to the up-conversion processes. A new formalism that takes into account both up- and down-conversion processes and the statistical distribution of acceptors around donor in the case of direct processes is presented. This involves a time dependent of transfer function and two interaction types: dipolar and superexchange. The profile of excitation beam is considered in order to compare theoretical calculations with experimental data. Calculations concerning quantum efficiency as a function on the ratio between up- and down- conversion rates are presented.

Paper Details

Date Published: 29 June 2001
PDF: 9 pages
Proc. SPIE 4430, ROMOPTO 2000: Sixth Conference on Optics, (29 June 2001); doi: 10.1117/12.432826
Show Author Affiliations
Voicu Lupei, Institute of Atomic Physics (Romania)
B. Diaconescu, Institute of Atomic Physics (Romania)
Aurelia Lupei, Institute of Atomic Physics (Romania)


Published in SPIE Proceedings Vol. 4430:
ROMOPTO 2000: Sixth Conference on Optics

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