980 nm excited upconversion in an Er-doped ZnO-TeO2 glass

被引：190

作者：

Vetrone, F

Boyer, JC

Capobianco, JA

Speghini, A

Bettinelli, M

机构：

[1] Concordia Univ, Dept Chem & Biochem, Montreal, PQ H3G 1M8, Canada

[2] Univ Verona, Dipartimento Sci & Tecnol, I-37134 Verona, Italy

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 10期

关键词：

D O I：

10.1063/1.1458073

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this letter, we investigate the upconversion properties of 19ZnO-80TeO(2)-1Er(2)O(3) glass after excitation into the I-4(11/2) level using 980 nm radiation. At an excitation power density of 880 W/cm2, green emission [(H-2(11/2), S-4(3/2))-->I-4(15/2)] dominates the upconversion spectrum with an efficiency of 0.16%. Temporal studies reveal that the I-4(11/2) level is the intermediate state by which the two-step upconversion process occurs. Excited-state absorption and phonon-assisted energy transfer are discussed as possible mechanisms for the upconversion. (C) 2002 American Institute of Physics.

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页码：1752 / 1754

页数：3

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