Upconversion emission in Er<Superscript>3+</Superscript>-doped lead niobium germanate thin-film glasses produced by pulsed laser deposition期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Upconversion emission in Er3+-doped lead niobium germanate thin-film glasses produced by pulsed laser deposition

Authors:	F. Lahoz P. Haro-Gonzalez F. Rivera-López S. González-Pérez I. R. Martín N. E. Capuj C. N. Afonso J. Gonzalo J. Fernández R. Balda

Affiliation:	(1) Departamento de Física Fundamental y Experimental, Eléctronica y Sistemas, University of La Laguna, 38206 La Laguna, Tenerife, Spain;(2) Departamento de Física Básica, University of La Laguna, 38206 La Laguna, Tenerife, Spain;(3) Laser Processing Group, Instituto de Optica, CSIC, Serrano 121, 28006 Madrid, Spain;(4) Departamento de Fisica Aplicada I, Escuela Superior de Ingenieros, Alda. Urquijo s/n, 48013 Bilbao, Spain;(5) Centro Mixto CSIC-UPV/EHU and DIPC, Donostia, Spain

Abstract:	Thin films of Er³⁺-doped lead–niobium germanate have been produced by pulsed laser deposition from Er³⁺-doped 25PbO₂–25Nb₂O₅–50GeO₂ (mol%) transparent glasses with an Er content in the range 0.5–3 wt%. The room-temperature infrared to visible upconversion properties of these thin films have been investigated under 800-nm laser excitation. An energy transfer upconversion mechanism has been identified to be responsible for the population of the ⁴S_3/2:²H_11/2 excited level, from which an intense green emission occurs. A rate equation analysis supports the proposed mechanism.

Keywords:	KeywordHeading" >PACS 78.20.-e 78.47.Cd 78.55.Qr 78.66.Jg
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