Emission characteristics, crystalline phase and composition of vapor-transport-equilibrated Er:LiNbO3 crystal codoped with 6 mol% MgO

被引：4
作者：
Zhang, De-Long [1 ,2 ,3 ]
Chen, Bei [1 ,2 ]
Liu, Hong-Li [1 ,2 ]
Cui, Yu-Ming [1 ,2 ]
Pun, E. Y. B. [3 ]
机构：
[1] Tianjin Univ, Dept Optoelect & Informat Engn, Coll Precis Instruments & Optoelect Engn, Tianjin 300072, Peoples R China
[2] Minist Educ, Key Lab Optoelect Informat Sci & Technol, Tianjin 300072, Peoples R China
[3] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Er:Mg:LiNbO3; Vapor-transport-equilibration; Er3+ emission; Crystalline phase; Composition; LITHIUM-NIOBATE; LINBO3; CRYSTALS; ER-LINBO3; CRYSTAL; DOPED LINBO3; DEPENDENCE; LIFETIME; GROWTH;
D O I：
10.1016/j.apsusc.2009.03.017
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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 mu m 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. (c) 2009 Elsevier B.V. All rights reserved.
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页码：6930 / 6938
页数：9
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