TY - JOUR
T1 - Emission characteristics, crystalline phase and composition of vapor-transport-equilibrated Er
T2 - LiNbO3 crystal codoped with 6 mol% MgO
AU - Zhang, De-Long
AU - Chen, Bei
AU - Liu, Hong-Li
AU - Cui, Yu-Ming
AU - Pun, E. Y B
PY - 2009/5/15
Y1 - 2009/5/15
N2 - Polarized downconversion, 980-nm-upconversion and near-infrared emission characteristics of vapor-transport-equilibrated (VTEed) bulk Er (0.4 mol%)/MgO (6 mol%)-codoped LiNbO3 crystals were investigated. The downconversion and upconversion visible emissions display similar VTE effects including the drop of emission intensity and the weakening of polarization dependence. At 0.98 and 1.5 μm regions, the VTE has a weak effect on the emission intensity, but a strong effect on the spectral shape. The crystalline phases in these bulk Er/Mg-codoped VTE crystals are determined by comparing their infrared emission characteristics with those of pure ErNbO4 powder and locally Er-doped MgO (4.5 mol%):LiNbO3 crystal. The results show that the Er3+ ions present in these bulk Er/Mg-codoped VTE crystals as a mixture of Er:LiNbO3 and ErNbO4 phases. The percentages of the ErNbO4 phase contained in these VTE crystals were evaluated from the 1531 and 1536 nm characteristic absorption areas. The contents of constituent elements were determined by chemical analysis. © 2009 Elsevier B.V. All rights reserved.
AB - Polarized downconversion, 980-nm-upconversion and near-infrared emission characteristics of vapor-transport-equilibrated (VTEed) bulk Er (0.4 mol%)/MgO (6 mol%)-codoped LiNbO3 crystals were investigated. The downconversion and upconversion visible emissions display similar VTE effects including the drop of emission intensity and the weakening of polarization dependence. At 0.98 and 1.5 μm regions, the VTE has a weak effect on the emission intensity, but a strong effect on the spectral shape. The crystalline phases in these bulk Er/Mg-codoped VTE crystals are determined by comparing their infrared emission characteristics with those of pure ErNbO4 powder and locally Er-doped MgO (4.5 mol%):LiNbO3 crystal. The results show that the Er3+ ions present in these bulk Er/Mg-codoped VTE crystals as a mixture of Er:LiNbO3 and ErNbO4 phases. The percentages of the ErNbO4 phase contained in these VTE crystals were evaluated from the 1531 and 1536 nm characteristic absorption areas. The contents of constituent elements were determined by chemical analysis. © 2009 Elsevier B.V. All rights reserved.
KW - Composition
KW - Crystalline phase
KW - Er:Mg:LiNbO3
KW - Er3+ emission
KW - Vapor-transport-equilibration
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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-67349092059&origin=recordpage
U2 - 10.1016/j.apsusc.2009.03.017
DO - 10.1016/j.apsusc.2009.03.017
M3 - RGC 21 - Publication in refereed journal
SN - 0169-4332
VL - 255
SP - 6930
EP - 6938
JO - Applied Surface Science
JF - Applied Surface Science
IS - 15
ER -