Emission and absorption cross sections of Er3+:LiNbO3 crystal: composition effect

被引：8
|
作者：
Zhang, De-Long [1 ,2 ,3 ,4 ]
Sun, Wen-Bao [1 ,2 ]
Wong, Wing-Han [1 ,2 ,3 ,4 ]
Pun, Edwin Yue-Bun [3 ,4 ]
机构：
[1] Tianjin Univ, Sch Precis Instruments & Optoelect Engn, Dept Optoelect & Informat Engn, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Key Lab Optoelect Informat Technol, Minist Educ, Tianjin 300072, Peoples R China
[3] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China
[4] City Univ Hong Kong, State Key Lab Millimeter Waves, Kowloon, Hong Kong, Peoples R China
来源：
OPTICAL MATERIALS EXPRESS | 2015年 / 5卷 / 09期
基金：
中国国家自然科学基金;
关键词：
IN-SITU MEASUREMENT; ER-DOPED LINBO3;
D O I：
10.1364/OME.5.001920
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report Er3+-doping, Mg2+-codoping and crystal composition effects on emission and absorption cross sections of Er3+-only doped and Er3+/Mg2+-codoped LiNbO3 crystals, in which Er3+ concentration ranges from 0.3 to 2.7 mol% and Mg2+ concentration from 1.2 to 7.4 mol%. The emission cross section spectra were calculated from the measured fluorescent spectra and the absorption cross section spectra were computed using the McCumber relation. The results show that increasing Er3+ concentration tends to decrease the cross section, while codoping with Mg2+ or increasing crystal composition tends to increase the cross section. As the composition is close to the stoichiometry, the cross section value tends to a constant. These effects are related to Er3+ site redistribution induced by doping or crystal composition alteration. (C) 2015 Optical Society of America
引用
收藏
页码：1920 / 1926
页数：7
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