Judd-Ofelt analysis of holmium-doped alumino-silicate optical glass prepared by MCVD combined with nanoparticle doping
Abstract
We present a detailed Judd--Ofelt (JO) analysis of Ho3+-doped alumino-silicate optical fiber preforms in a wide range of compositions and prepared by both the standard solution doping method as well as the more advanced nanoparticle doping. The absorption spectra were measured, the absorption cross sections were calculated for each observed transition, and the Judd--Ofelt analysis was conducted. The preforms exhibited the values of JO parameters of Ω2 = (7.2−−10.6) × 10−20 cm2, depending on the Al2O3 content, and Ω4 and Ω6 around $2.5$ and 1.2 × 10−20 cm2, respectively. The radiative transition parameters, such as transition probabilities, branching ratios, and radiative lifetimes, were calculated. The radiative lifetime of the 5I7 → 5I8 transition, in the 16.1−−17.2 ms range, combined with a measured value in the 0.9−−1.9 ms range, was used to calculate the quantum efficiency, which was in the 5−−11 % range. The preforms prepared by nanoparticle doping containing high Al2O3 contents above 8 mol. % exhibited superior values of measured lifetime (above 1.5 ms) and quantum efficiency (above 8 %) compared to the standard solution-doped samples. To the best of our knowledge, this work is the first comprehensive report on the JO analysis of Ho3+-doped alumino-silicate glass. The calculated parameters may be used in various calculations, simulations, and modelling of holmium-doped fiber lasers and other devices.
Related
- Strengthened Silicate Glasses by Residual Stress: Depth of Compression and Surface Flaws Stability Conditions
- Redox behavior and local structure of antimony in soda-lime silicate glass
- Quantum States Prepared by Wormholes: Long-Wavelength Deviations from Bunch-Davies
- Random matrix product state models of gravitationally prepared states
- Interplay of Composition, Crystallinity, and Chemical Structure in CoHCF and NiHCF Thin Films Prepared at Different Temperatures
BibTeX
@misc{varak2026juddofelt,
title = {{Judd-Ofelt analysis of holmium-doped alumino-silicate optical glass prepared by MCVD combined with nanoparticle doping}},
author = {Petr Varak and Michal Kamradek and Pavla Nekvindova and Jan Hrabovsky and Pavel Peterka},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.39555},
eprint = {2609.39555},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.39555},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Judd-Ofelt analysis of holmium-doped alumino-silicate optical glass prepared by MCVD combined with nanoparticle doping
AU - Petr Varak
AU - Michal Kamradek
AU - Pavla Nekvindova
AU - Jan Hrabovsky
AU - Pavel Peterka
PY - 2026
DA - 2026/09/30
PB - arXiv
DO - 10.48550/arxiv.2609.39555
UR - https://arxiv.org/abs/2609.39555
AB - We present a detailed Judd--Ofelt (JO) analysis of Ho^3+-doped alumino-silicate optical fiber preforms in a wide range of compositions and prepared by both the standard solution doping method as well as the more advanced nanoparticle doping. The absorption spectra were measured, the absorption cross sections were calculated for each observed transition, and the Judd--Ofelt analysis was conducted. The preforms exhibited the values of JO parameters of Ω_2 = (7.2−−10.6) × 10^−20 cm^2, depending on the Al_2O_3 content, and Ω_4 and Ω_6 around $2.5$ and 1.2 × 10^−20 cm^2, respectively. The radiative transition parameters, such as transition probabilities, branching ratios, and radiative lifetimes, were calculated. The radiative lifetime of the ^5I_7 → ^5I_8 transition, in the 16.1−−17.2 ms range, combined with a measured value in the 0.9−−1.9 ms range, was used to calculate the quantum efficiency, which was in the 5−−11 % range. The preforms prepared by nanoparticle doping containing high Al_2O_3 contents above 8 mol. % exhibited superior values of measured lifetime (above 1.5 ms) and quantum efficiency (above 8 %) compared to the standard solution-doped samples. To the best of our knowledge, this work is the first comprehensive report on the JO analysis of Ho^3+-doped alumino-silicate glass. The calculated parameters may be used in various calculations, simulations, and modelling of holmium-doped fiber lasers and other devices.
ER -