Open AccessSTUDY ON UPCONVERSION FLUORESCENCE OF Er3+-DOPED YTTRIUM VANADATE
Author(s) -
Jinguo Wang,
Zhiguo Zhang,
XU JI-REN,
Panming Fu,
Yan Xiuli,
Wu Xing,
Jiang Yandao
Publication year - 1998
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.47.747
Subject(s) - photon upconversion , vanadate , materials science , yttrium , excited state , fluorescence , doping , analytical chemistry (journal) , laser diode , laser , population , absorption (acoustics) , atomic physics , diode , optoelectronics , optics , chemistry , physics , chromatography , metallurgy , composite material , oxide , demography , sociology
Upconversion fluorescence near 553 and 410nm was detected when the Er3+-doped yttrium vanadate (Er3+∶YVO4) crystal was excited with a 808nm-diode laser and a 658nm-dye laser. Analysis of excitation mechanism shows that excited state absorption dominantly contributes to the upconversion emissions. Measurement of lifetimes for different Er3+ concentration indicates that the lifetime of 553nm emission decreases with increasing Er3+ concentration, but no considerable changes of that of 410nm emission have been observed. With the consideration of the fact that the intensity of 553nm band declines with increasing Er3+ concentration, we argue that in the concentration range measured there is an appreciable concentration quenching in the 553nm emission, and a dominant population channel of its upper state (4S3/2) is the nonradiative relaxation from the upper state (2H9/2) of the 410nm band.
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