Dysprosium in fluoroindate glass: a platform for mid-infrared laser development [Invited]
Abstract
We report a comprehensive spectroscopic investigation of dysprosium (Dy³⁺)-doped fluoroindate (InF₃-based) glasses as a promising material platform for mid-infrared fiber lasers. Dy³⁺ ions exhibit a stimulated emission cross-section of 0.31 × 10⁻²⁰ cm² at 2924 nm for the ⁶H₁₃/₂ → ⁶H₁₅/₂ transition, with a gain bandwidth of >500 nm. The associated Stokes multiphonon emission sideband further extends the emission up to at least 4 µm. Transition probabilities of Dy³⁺ ions are analyzed using a modified Judd-Ofelt formalism incorporating configuration interaction effects. Concentration quenching of the ⁶H₁₃/₂ excited-state lifetime is characterized, and anomalously strong multiphonon nonradiative relaxation is discussed. These properties are evaluated in comparison with other low-phonon-energy host matrices for Dy³⁺ doping. Energy transfer processes in Er³⁺,Dy³⁺ codoped glasses are quantified. Laser action is demonstrated in a bulk Er³⁺,Dy³⁺:InF₃-based glass, with free-running emission spanning 2.7–3.4 µm, and, in addition, a double-clad fiber laser diode-pumped at 976 nm delivers output power at the 100 mW level at 3.3 µm. InF₃-based glass fibers with optimized codoping concentrations emerge as promising candidates for broadly wavelength-tunable and ultrashort-pulse mid-infrared laser sources.
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BibTeX
@article{nguyen2026dysprosium,
title = {{Dysprosium in fluoroindate glass: a platform for mid-infrared laser development [Invited]}},
author = {Ngoc Quynh Hoa Nguyen and Pavel A Loiko and Thiphaine Rault and Solenn Cozic and Jean Letourneur and Elena Dunina and Liudmila Fomicheva and Alexey Kornienko and Saad Hatim and Kirill Eremeev and Pierre-Henry Hanzard and Thomas Godin and Patrice Camy and Ammar Hideur},
journal = {Optical Materials Express},
year = {2026},
month = oct,
doi = {10.1364/ome.596515},
url = {https://hal.science/hal-05838219v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Dysprosium in fluoroindate glass: a platform for mid-infrared laser development [Invited]
AU - Ngoc Quynh Hoa Nguyen
AU - Pavel A Loiko
AU - Thiphaine Rault
AU - Solenn Cozic
AU - Jean Letourneur
AU - Elena Dunina
AU - Liudmila Fomicheva
AU - Alexey Kornienko
AU - Saad Hatim
AU - Kirill Eremeev
AU - Pierre-Henry Hanzard
AU - Thomas Godin
AU - Patrice Camy
AU - Ammar Hideur
PY - 2026
DA - 2026/10/05
JO - Optical Materials Express
DO - 10.1364/ome.596515
UR - https://hal.science/hal-05838219v1
AB - We report a comprehensive spectroscopic investigation of dysprosium (Dy³⁺)-doped fluoroindate (InF₃-based) glasses as a promising material platform for mid-infrared fiber lasers. Dy³⁺ ions exhibit a stimulated emission cross-section of 0.31 × 10⁻²⁰ cm² at 2924 nm for the ⁶H₁₃/₂ → ⁶H₁₅/₂ transition, with a gain bandwidth of >500 nm. The associated Stokes multiphonon emission sideband further extends the emission up to at least 4 µm. Transition probabilities of Dy³⁺ ions are analyzed using a modified Judd-Ofelt formalism incorporating configuration interaction effects. Concentration quenching of the ⁶H₁₃/₂ excited-state lifetime is characterized, and anomalously strong multiphonon nonradiative relaxation is discussed. These properties are evaluated in comparison with other low-phonon-energy host matrices for Dy³⁺ doping. Energy transfer processes in Er³⁺,Dy³⁺ codoped glasses are quantified. Laser action is demonstrated in a bulk Er³⁺,Dy³⁺:InF₃-based glass, with free-running emission spanning 2.7–3.4 µm, and, in addition, a double-clad fiber laser diode-pumped at 976 nm delivers output power at the 100 mW level at 3.3 µm. InF₃-based glass fibers with optimized codoping concentrations emerge as promising candidates for broadly wavelength-tunable and ultrashort-pulse mid-infrared laser sources.
SN - 2159-3930
SN - 2159-3930
ER -