Broadband near-infrared emission in Tm3+-doped high-entropy (Lu,Y,Sc,Gd)2O3 crystal fibers grown by LHPG
Abstract
Tm3+-doped (Lu0.25Y0.25Sc0.25Gd0.25)2O3 high-entropy sesquioxide crystal fibers with doping concentrations of 2, 4, and 8 at.% were successfully grown using the laser-heated pedestal growth (LHPG) method. X-ray diffraction (XRD) confirmed that the crystal fibers possess a cubic structure. A comprehensive spectroscopic characterization was performed, including absorption and fluorescence spectra, as well as fluorescence decay curves. The JuddOfelt theory was applied to determine the spontaneous emission probabilities and radiative lifetime. For the 2.0 at.% doped fiber, the absorption cross-section at 793 nm was measured to be 2.76 & times; 10-21 cm2. The emission cross-section corresponding to the 3F4 -> 3H6 transition in the 2.0 at.% doped fiber reached 0.94 & times; 10-20 cm2 with an FWHM of 81.89 nm. The fluorescence lifetime of the 3F4 level decreased with increasing Tm3+ concentration, from 1.52ms at 2.0 at.% to 0.27 ms at 8.0 at.%. These results demonstrate that Tm3+-doped (Lu,Y,Sc, Gd)2O3 high-entropy crystal fibers exhibit outstanding spectral properties, making them promising gain media for tunable and ultrafast lasers in the near-infrared region.
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BibTeX
@article{sun2026broadband,
title = {{Broadband near-infrared emission in Tm3+-doped high-entropy (Lu,Y,Sc,Gd)2O3 crystal fibers grown by LHPG}},
author = {Liuyin Sun and Jian Liu and Xinyu Guo and Zhengyuan Jiang and Peng Liu and Xiaodong Xu and Jun Xu and Kheirreddine Lebbou},
journal = {Journal of Luminescence},
year = {2026},
month = nov,
doi = {10.1016/j.jlumin.2026.122017},
url = {https://hal.science/hal-05847314v1},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - JOUR
TI - Broadband near-infrared emission in Tm3+-doped high-entropy (Lu,Y,Sc,Gd)2O3 crystal fibers grown by LHPG
AU - Liuyin Sun
AU - Jian Liu
AU - Xinyu Guo
AU - Zhengyuan Jiang
AU - Peng Liu
AU - Xiaodong Xu
AU - Jun Xu
AU - Kheirreddine Lebbou
PY - 2026
DA - 2026/11/05
JO - Journal of Luminescence
DO - 10.1016/j.jlumin.2026.122017
UR - https://hal.science/hal-05847314v1
AB - Tm3+-doped (Lu0.25Y0.25Sc0.25Gd0.25)2O3 high-entropy sesquioxide crystal fibers with doping concentrations of 2, 4, and 8 at.% were successfully grown using the laser-heated pedestal growth (LHPG) method. X-ray diffraction (XRD) confirmed that the crystal fibers possess a cubic structure. A comprehensive spectroscopic characterization was performed, including absorption and fluorescence spectra, as well as fluorescence decay curves. The JuddOfelt theory was applied to determine the spontaneous emission probabilities and radiative lifetime. For the 2.0 at.% doped fiber, the absorption cross-section at 793 nm was measured to be 2.76 & times; 10-21 cm2. The emission cross-section corresponding to the 3F4 -> 3H6 transition in the 2.0 at.% doped fiber reached 0.94 & times; 10-20 cm2 with an FWHM of 81.89 nm. The fluorescence lifetime of the 3F4 level decreased with increasing Tm3+ concentration, from 1.52ms at 2.0 at.% to 0.27 ms at 8.0 at.%. These results demonstrate that Tm3+-doped (Lu,Y,Sc, Gd)2O3 high-entropy crystal fibers exhibit outstanding spectral properties, making them promising gain media for tunable and ultrafast lasers in the near-infrared region.
SN - 0022-2313
SN - 1872-7883
ER -