TY - JOUR
T1 - Spectroscopic properties of Er3+ doped germanate glasses before and after a heat treatment process
AU - Lemiere, Arnaud
AU - Bondzior, Bartosz
AU - Kuusela, Luukas
AU - Veber, Alexander
AU - Petit, Laeticia
N1 - Funding Information:
H2020 Marie Skłodowska-Curie Actions (713694); Narodowa Agencja Wymiany Akademickiej (PPN/BEK/ 2020/1/00074); Academy of Finland (320165, 326418). The authors would like to acknowledge the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant (agreement No 713694), Academy of Finland (Flagship Programme, Photonics Research and Innovation PREIN-320165 and Academy Project -326418). BB would also like to acknowledge the Polish National Agency for Academic Exchange (Bekker programme, project PPN/BEK/2020/1/00074).
Funding Information:
Acknowledgment. The authors would like to acknowledge the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant (agreement No 713694), Academy of Finland (Flagship Programme, Photonics Research and Innovation PREIN-320165 and Academy Project -326418). BB would also like to acknowledge the Polish National Agency for Academic Exchange (Bekker programme, project PPN/BEK/2020/1/00074).
Publisher Copyright:
© 2023 OSA - The Optical Society. All rights reserved.
PY - 2023/1/1
Y1 - 2023/1/1
N2 - In this paper structural, thermal and optical properties of Er3+ doped germanate glasses with the composition of 63.0GeO2-9.8Ga2O3-11.1BaO-4.9X-8.8Na2O-2.5Er2O3 (in mol%), where X = ZnO, TiO2, Al2O3 and Y2O3 are reported. The investigated glasses exhibit low phonon energies (<1000 cm−1) and high glass transition temperature varying between 588 and 642 °C. The Raman spectra evidence about different polymerization degree of the glasses. The thermal treatment leads to the precipitation of various crystals, the composition of which depends on the glass composition. According to the spectroscopic properties Er3+ ions are suspected to have similar local environment in the as-prepared glasses. However, Er-doped crystals are expected to precipitate upon devitrification, which leads to significant change of the spectroscopic properties, in particular increase in the intensity of upconversion and MIR emissions is observed. It is demonstrated that the glasses with Y2O3, ZnO and TiO2 are promising glasses especially for MIR applications.
AB - In this paper structural, thermal and optical properties of Er3+ doped germanate glasses with the composition of 63.0GeO2-9.8Ga2O3-11.1BaO-4.9X-8.8Na2O-2.5Er2O3 (in mol%), where X = ZnO, TiO2, Al2O3 and Y2O3 are reported. The investigated glasses exhibit low phonon energies (<1000 cm−1) and high glass transition temperature varying between 588 and 642 °C. The Raman spectra evidence about different polymerization degree of the glasses. The thermal treatment leads to the precipitation of various crystals, the composition of which depends on the glass composition. According to the spectroscopic properties Er3+ ions are suspected to have similar local environment in the as-prepared glasses. However, Er-doped crystals are expected to precipitate upon devitrification, which leads to significant change of the spectroscopic properties, in particular increase in the intensity of upconversion and MIR emissions is observed. It is demonstrated that the glasses with Y2O3, ZnO and TiO2 are promising glasses especially for MIR applications.
U2 - 10.1364/OME.476131
DO - 10.1364/OME.476131
M3 - Article
AN - SCOPUS:85147542496
SN - 2159-3930
VL - 13
SP - 218
EP - 228
JO - Optical Materials Express
JF - Optical Materials Express
IS - 1
ER -