Cooperative emission study in ytterbium doped NdVO sub(4)

The infrared and visible cooperative emissions of ytterbium ions are studied in Yb-doped NdVO sub(4 single crystals. The absorption of optical phonons allows the emissions at room temperature when a Nd:YAG laser is used. Low temperature emissions are observed due to the Nd[super]3+-->Yb[super]3+...

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Published in:Journal of luminescence 2011-05, Vol.131 (5), p.1077-1081
Main Authors: Levesque, Y, Jandl, S, Bettinelli, M
Format: Article
Language:English
Subjects:
Argon
Doping
Emission analysis
Emittance
Energy transfer
Infrared
Lasers
Luminescence
Ytterbium
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creator Levesque, Y
Jandl, S
Bettinelli, M
description The infrared and visible cooperative emissions of ytterbium ions are studied in Yb-doped NdVO sub(4 single crystals. The absorption of optical phonons allows the emissions at room temperature when a Nd:YAG laser is used. Low temperature emissions are observed due to the Nd[super]3+-->Yb[super]3+ energy transfer following an argon ion laser excitation of the Nd[super]3+ ions. Analysis of the cooperative emission at low doping concentration (1%) indicates that it is generated by distant pair forming Yb[super]3+ ions while at high doping concentration (>= 5%) close ions magnetically coupled and superexchange mechanisms prevail in the emitting process.)
doi_str_mv 10.1016/j.jlumin.2011.01.025
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subjects Argon
Doping
Emission analysis
Emittance
Energy transfer
Infrared
Lasers
Luminescence
Ytterbium
title Cooperative emission study in ytterbium doped NdVO sub(4)
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