Energy transfer and energy level decay processes of Er3+ in water-free tellurite glass

Laercio Gomes, Daniel Rhonehouse, Dan T. Nguyen, Jie Zong, Arturo Chavez-Pirson, Stuart D. Jackson

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This report details the fundamental spectroscopic properties of a new class of water-free tellurite glasses studied for future applications in mid-infrared light generation. The fundamental excited state decay processes relating to the 4I11/24I13/2 transition in singly Er3+-doped Tellurium Zinc Lanthanum glass have been investigated using time-resolved fluorescence spectroscopy. The excited state dynamics was analyzed for Er2O3 concentrations between 0.5 mol% and 4 mol%. Selective laser excitation of the 4I11/2 energy level at 972 nm and selective laser excitation of the 4I13/2 energy level at 1485 nm has established that in a similar way to other Er3+-doped glasses, a strong energy-transfer upconversion by way of a dipole-dipole interaction between two excited erbium ions in the 4I13/2 level populates the 4I11/2 upper laser level of the 3 μm transition. The 4I13/2 and 4I11/2 energy levels emitted luminescence with peaks located at 1532 nm and 2734 nm respectively with luminescence efficiencies of 100% and 8% for the higher (4 mol.%) concentration sample. Results from numerical simulations showed that a population inversion is reached at a threshold pumping intensity of ∼57 kW cm-2 for a CW laser pump at 976 nm for [Er2O3] = 2 mol.%.

LanguageEnglish
Pages268-274
Number of pages7
JournalOptical Materials
Volume50
DOIs
Publication statusPublished - 1 Dec 2015

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Energy transfer
Electron energy levels
Laser excitation
energy levels
energy transfer
Excited states
Glass
Water
Luminescence
glass
decay
Erbium
Tellurium
water
excitation
lasers
Lanthanum
Continuous wave lasers
Fluorescence spectroscopy
luminescence

Cite this

Gomes, Laercio ; Rhonehouse, Daniel ; Nguyen, Dan T. ; Zong, Jie ; Chavez-Pirson, Arturo ; Jackson, Stuart D. / Energy transfer and energy level decay processes of Er3+ in water-free tellurite glass. In: Optical Materials. 2015 ; Vol. 50. pp. 268-274.
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abstract = "This report details the fundamental spectroscopic properties of a new class of water-free tellurite glasses studied for future applications in mid-infrared light generation. The fundamental excited state decay processes relating to the 4I11/2 → 4I13/2 transition in singly Er3+-doped Tellurium Zinc Lanthanum glass have been investigated using time-resolved fluorescence spectroscopy. The excited state dynamics was analyzed for Er2O3 concentrations between 0.5 mol{\%} and 4 mol{\%}. Selective laser excitation of the 4I11/2 energy level at 972 nm and selective laser excitation of the 4I13/2 energy level at 1485 nm has established that in a similar way to other Er3+-doped glasses, a strong energy-transfer upconversion by way of a dipole-dipole interaction between two excited erbium ions in the 4I13/2 level populates the 4I11/2 upper laser level of the 3 μm transition. The 4I13/2 and 4I11/2 energy levels emitted luminescence with peaks located at 1532 nm and 2734 nm respectively with luminescence efficiencies of 100{\%} and 8{\%} for the higher (4 mol.{\%}) concentration sample. Results from numerical simulations showed that a population inversion is reached at a threshold pumping intensity of ∼57 kW cm-2 for a CW laser pump at 976 nm for [Er2O3] = 2 mol.{\%}.",
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Energy transfer and energy level decay processes of Er3+ in water-free tellurite glass. / Gomes, Laercio; Rhonehouse, Daniel; Nguyen, Dan T.; Zong, Jie; Chavez-Pirson, Arturo; Jackson, Stuart D.

In: Optical Materials, Vol. 50, 01.12.2015, p. 268-274.

Research output: Contribution to journalArticleResearchpeer-review

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