Effects of nearest‐neighbor pairs on the energy transfer in Nd:YAG
作者:
V. Lupei,
A. Lupei,
S. Georgescu,
I. Ursu,
期刊:
Applied Physics Letters
(AIP Available online 1991)
卷期:
Volume 59,
issue 8
页码: 905-907
ISSN:0003-6951
年代: 1991
DOI:10.1063/1.106420
出版商: AIP
数据来源: AIP
摘要:
An analysis of the luminescence quenching of4F3/2level of Nd3+in YAG is presented in terms of two models: uniform random distribution and nonuniform placement of activators. It is shown that the correlated placement model for Nd3+ions, assuming the absence, based on ionic size arguments, of Nd3+ions in nearest‐neighbor sites, is in contradiction with high resolution absorption spectra as well as quantum yield data. The anomalous decay can be described by energy transfer theory for a uniform distribution with a short‐range interaction connecting the nearest‐neighbor pairs and with dipolar interaction inside the other donor‐acceptor pairs.
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