Spectroscopy of mid-infrared (2.9 μm) fluorescence and energy transfer in Dy3+-doped tellurite glasses

Laércio Gomes, Joris Lousteau, Daniel Milanese, Emanuele Mura, Stuart D. Jackson

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Abstract

The decay processes relating to the potential 6H13?26H15?2 laser transition for 2.9 μm emission in single Dy3+- doped tellurite (TZNF and TZN) glasses have been investigated in detail using time-resolved fluorescence spectroscopy. The selective laser excitation of the 6F5?2 and 6H9?2, 6F 11?2 energy levels at 805 and 1300 nm, respectively, have established that the decay processes of the lowest excited level (i.e., 6H13?2) entirely favors multiphonon emission in a tellurite glass host. Detailed investigation of the 6H13?2 luminescence decay characteristic revealed that two decay constants are involved in the TZNF glass composition; approximately 90% of the decay has a time constant (τ1) of 19.6 μs. The remaining centers decay with a time constant τ2 - 112 μs due to the Dy3+ fluorine bonds, which are possibly present in the TZNF glass matrix. Slight quenching of ?1 for Dy3+ concentration increases to 2 mol.%may indicate energy transfer to OH? molecules in the TZNF glass despite the low OH? content, αOH?∼ 0.04 cm?1; further decrease of τ1 (to 9.7 μs) was measured in TZN glass matrix, which is commensurate with the higher OH? density (α 0.15 cm ?1).

LanguageEnglish
Pages429-435
Number of pages7
JournalJournal of the Optical Society of America B: Optical Physics
Volume31
Issue number3
DOIs
Publication statusPublished - 1 Mar 2014
Externally publishedYes

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energy transfer
fluorescence
glass
decay
spectroscopy
time constant
matrices
lasers
fluorine
energy levels
quenching
luminescence
excitation
molecules

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@article{37a3d4f2334f4ffbb88873558797a56b,
title = "Spectroscopy of mid-infrared (2.9 μm) fluorescence and energy transfer in Dy3+-doped tellurite glasses",
abstract = "The decay processes relating to the potential 6H13?2 → 6H15?2 laser transition for 2.9 μm emission in single Dy3+- doped tellurite (TZNF and TZN) glasses have been investigated in detail using time-resolved fluorescence spectroscopy. The selective laser excitation of the 6F5?2 and 6H9?2, 6F 11?2 energy levels at 805 and 1300 nm, respectively, have established that the decay processes of the lowest excited level (i.e., 6H13?2) entirely favors multiphonon emission in a tellurite glass host. Detailed investigation of the 6H13?2 luminescence decay characteristic revealed that two decay constants are involved in the TZNF glass composition; approximately 90{\%} of the decay has a time constant (τ1) of 19.6 μs. The remaining centers decay with a time constant τ2 - 112 μs due to the Dy3+ fluorine bonds, which are possibly present in the TZNF glass matrix. Slight quenching of ?1 for Dy3+ concentration increases to 2 mol.{\%}may indicate energy transfer to OH? molecules in the TZNF glass despite the low OH? content, αOH?∼ 0.04 cm?1; further decrease of τ1 (to 9.7 μs) was measured in TZN glass matrix, which is commensurate with the higher OH? density (α 0.15 cm ?1).",
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Spectroscopy of mid-infrared (2.9 μm) fluorescence and energy transfer in Dy3+-doped tellurite glasses. / Gomes, Laércio; Lousteau, Joris; Milanese, Daniel; Mura, Emanuele; Jackson, Stuart D.

In: Journal of the Optical Society of America B: Optical Physics, Vol. 31, No. 3, 01.03.2014, p. 429-435.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Spectroscopy of mid-infrared (2.9 μm) fluorescence and energy transfer in Dy3+-doped tellurite glasses

AU - Gomes, Laércio

AU - Lousteau, Joris

AU - Milanese, Daniel

AU - Mura, Emanuele

AU - Jackson, Stuart D.

PY - 2014/3/1

Y1 - 2014/3/1

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AB - The decay processes relating to the potential 6H13?2 → 6H15?2 laser transition for 2.9 μm emission in single Dy3+- doped tellurite (TZNF and TZN) glasses have been investigated in detail using time-resolved fluorescence spectroscopy. The selective laser excitation of the 6F5?2 and 6H9?2, 6F 11?2 energy levels at 805 and 1300 nm, respectively, have established that the decay processes of the lowest excited level (i.e., 6H13?2) entirely favors multiphonon emission in a tellurite glass host. Detailed investigation of the 6H13?2 luminescence decay characteristic revealed that two decay constants are involved in the TZNF glass composition; approximately 90% of the decay has a time constant (τ1) of 19.6 μs. The remaining centers decay with a time constant τ2 - 112 μs due to the Dy3+ fluorine bonds, which are possibly present in the TZNF glass matrix. Slight quenching of ?1 for Dy3+ concentration increases to 2 mol.%may indicate energy transfer to OH? molecules in the TZNF glass despite the low OH? content, αOH?∼ 0.04 cm?1; further decrease of τ1 (to 9.7 μs) was measured in TZN glass matrix, which is commensurate with the higher OH? density (α 0.15 cm ?1).

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