Enhanced 1.53 μ m emission of Er3+ ions in phosphate glass via energy transfer from Cu+ ions

José A. Jiménez, Mariana Sendova

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Abstract

Optimizing the efficiency of Er3+ emission in the near-infrared telecommunication window in glass matrices is currently a subject of great interest in photonics research. In this work, Cu+ ions are shown to be successfully stabilized at a high concentration in Er-containing phosphate glass by a single-step melt-quench method, and demonstrated to transfer energy to Er3+ thereby enhancing the near-infrared emission about 15 times. The spectroscopic data indicate an energy conversion process where Cu + ions first absorb photons broadly around 360 nm and subsequently transfer energy from the Stokes-shifted emitting states to resonant Er 3+ absorption transitions in the visible. Consequently, the Er 3+ electronic excited states decay and the 4I 3/2 metastable state is populated, leading to the enhanced emission at 1.53 μm. Monovalent copper ions are thus recognized as sensitizers of Er3+ ions, suggesting the potential of Cu+ co-doping for applications in the telecommunications, solar cells, and solid-state lasing realizable under broad band near-ultraviolet optical pumping.

Original languageEnglish (US)
Article number033518
JournalJournal of Applied Physics
Volume116
Issue number3
DOIs
StatePublished - Jul 21 2014
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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