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Effect of Nd3+ concentration quenching in highly doped lead lanthanum zirconate titanate transparent ferroelectric ceramics

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7 Author(s)
de Camargo, A.S.S. ; Instituto de Física de São Carlos, Universidade de São Paulo, 13560-970 São Carlos, São Paulo, Brazil ; Jacinto, C. ; Nunes, L.A.O. ; Catunda, T.
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The concentration dependence of the fluorescence quantum efficiency in Nd3+ doped lead lanthanum zirconate titanate (PLZT), transparent ceramics, is presented. The total emission decay of the emitting level 4F3/2 is close to exponential, even for high Nd3+ concentration Nt, due to the very low probability of the cross relaxation energy transfer processes among ions. Owing to this low probability, it was inferred that Nd:PLZT presents lower concentration quenching than other laser materials as Nd:YAG. The figure of merit ηNt, where η is the fluorescence quantum efficiency, presents a maximum around 6.0 wt % Nd2O3, indicating the good prospects of concentrated samples for miniaturization of the laser medium (microchip laser).

Published in:

Journal of Applied Physics  (Volume:101 ,  Issue: 5 )