Near-infrared quantum cutting in OH- free Nd3+-Yb3+ co-doped low-silica calcium aluminosilicate glasses

被引：27

作者：

Borrero-Gonzalez, L. J. ^{[1
]}

Nunes, L. A. O. ^{[1
]}

Bianchi, G. S. ^{[2
]}

Astrath, F. B. G. ^{[2
]}

Baesso, M. L. ^{[2
]}

机构：

[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[2] Univ Estadual Maringa, Dept Fis, BR-87020900 Maringa, Parana, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 114卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

SPECTROSCOPIC PROPERTIES; DOWN-CONVERSION; LASER-EMISSION; UP-CONVERSION; FIBER-LASER; DOWNCONVERSION; PHOTOVOLTAICS; EFFICIENCY;

D O I：

10.1063/1.4812373

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Near-infrared (NIR) quantum cutting (QC) through downconversion (DC) in OH- free Nd3+-Yb3+ co-doped low-silica calcium aluminosilicate glasses (LSCAS) was observed. Luminescence and time-resolved measurements allowed the investigation of the origin of the Yb3+ DC emission. Our results showed that only one NIR photon is emitted by the Yb3+ ion through one-step energy transfer after excitation with a VIS photon absorbed by the Nd3+ ion. However, after excitation with an UV photon absorbed by the Nd3+ ion, two NIR photons are emitted by the Yb3+ ion through two-step energy transfer. The Yb3+ DC normalized intensities after excitation at 325 nm showed an increase of a factor of two compared to that of 514 nm excitation. In addition, the energy transfer probabilities from Nd3+ to Yb3+ were estimated by analyzing the Yb3+ DC kinetics. The overall results showed an efficient QC through DC process in Nd3+-Yb3+ co-doped LSCAS glasses, and the energy transfer mechanisms are discussed. (C) 2013 AIP Publishing LLC.

引用

页数：6

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