Skip to Main content Skip to Navigation
Journal articles

Different dominant transitions in holmium and ytterbium codoped oxyfluoride glass and glass ceramics originating from varying phonon energy environments

Abstract : Transparent oxyfluoride glass and glass ceramics doped with 0.5% Ho3+ and 1.0% Yb3+ ions have been prepared. X-ray diffraction and transmission electron microscopy demonstrated the formation of NaYF4 nanocrystals during the heat treatment process. Raman spectra indicated the variation of glass structure brought about by the formation of NaYF4 nanocrystals. XRD curves and Judd-Ofelt intensity parameters confirmed the incorporation of Ho3+ into NaYF4 nanocrystals. Significantly enhanced visible upconversion and 2.85 mm emissions were achieved in glass ceramic under 980 nm laser diode pumping. A broadband spectrum with a full-width at half-maximum close to 132 nm was obtained in the glass ceramic. Besides, the calculated peak emission cross section was 0.6 x 10(-20) cm(2), suggesting that the glass ceramic is a promising gain material that can be applied to broadband amplifiers in the mid-infrared region. Furthermore, energy transfer mechanisms in glass and glass ceramics were proposed based on visible to mid-infrared emission spectra. It was found that the change in the photon energy environment around rare earth ions induced different dominant transitions in glass and glass ceramic. Finally, the influence of phonon energy on the transition processes was further quantitatively investigated, which may provide useful guidance for obtaining highly efficient 2.85 mm emission of holmium.
Document type :
Journal articles
Complete list of metadatas

Cited literature [23 references]  Display  Hide  Download

https://hal-univ-rennes1.archives-ouvertes.fr/hal-01671252
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, April 24, 2018 - 12:45:25 PM
Last modification on : Friday, July 10, 2020 - 4:24:52 PM
Long-term archiving on: : Wednesday, September 19, 2018 - 9:06:37 AM

File

Liu - Different dominant trans...
Files produced by the author(s)

Identifiers

Citation

Qunhuo Liu, Ying Tian, Caizhi Wang, Feifei Huang, Xufeng Jing, et al.. Different dominant transitions in holmium and ytterbium codoped oxyfluoride glass and glass ceramics originating from varying phonon energy environments. Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2017, 19 (44), pp.29833-29839. ⟨10.1039/c7cp06638d⟩. ⟨hal-01671252⟩

Share

Metrics

Record views

208

Files downloads

251