Journal ArticleDOI
Electronic Energy Levels in the Trivalent Lanthanide Aquo Ions. I. Pr3+, Nd3+, Pm3+, Sm3+, Dy3+, Ho3+, Er3+, and Tm3+
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TLDR
In this article, the free-ion energy-level schemes of the Pr3+, Nd3+, Pm3+, Sm3+, Dy3, Dy3+, Ho3+, Er3+, and Tm3+ aquo ions have been determined from their absorption spectra in dilute acid solution at 25°.Abstract:
The free‐ion energy‐level schemes of the Pr3+, Nd3+, Pm3+, Sm3+, Dy3+, Ho3+, Er3+, and Tm3+ aquo ions have been determined from their absorption spectra in dilute acid solution at 25°. Energy‐level assignments were made by comparison with crystal spectra, and on the basis of correlations between calculated and observed band intensities. For most of the ions, it was possible to identify several transitions giving rise to bands at energies as high as 45 000–50 000 cm−1. Sufficient numbers of assignments were made to justify inclusion of the effects of configuration interaction in the calculation of the energy‐level parameters. Variation of the electrostatic, spin–orbit coupling, and configuration‐interaction parameters across the lanthanide series is examined.read more
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Optical properties of Er 3+ /Yb 3+ co-doped bismuth calcium borate glass system for NIR lasers and fiber amplifiers
TL;DR: In this paper, an Er3+/Yb3+ co-doped bismuthate (Bi2O3-B2O-3-CaO) glass was prepared by melt quenching method and analyzed by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), absorption and emission spectroscopy.
Journal ArticleDOI
Investigations on the physical, structural, optical and photoluminescence behavior of Er3+ ions in lithium zinc fluoroborate glass system
TL;DR: In this paper, a family of lithium zinc fluoroborate glasses with 15ZnF2-10BaO-8Al2O3-12Li2O-(55-x) B2O-3-xEr2O 3 (x = 0.5, 0.7, 1.1,1.3 and 1.5) composition were prepared by conventional melt-quench method.
Journal ArticleDOI
Analysis of spectral line intensities of TR3+ ions in disordered crystal systems
A. A. Kaminskii,L E Li +1 more
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Research on the up-conversion luminescence of Tm3+ ion in crystal and amorphous pentaphosphate materials
TL;DR: In this paper, a compound upconversion mechanism involving both stepwise two-photon absorption of a single ion and cooperative energy transfer between two ions is observed, and the methods and procedures to analyze the phenomenon and mechanism of luminescence are presented.
Journal ArticleDOI
Nd3+:Ga-Ge-Sb-S glasses and fibers for luminescence in mid-IR: synthesis, structural characterization and rare earth spectroscopy
Radwan Chahal,Florent Starecki,Jean-Louis Doualan,Petr Němec,A. Trapananti,Carmelo Prestipino,Grégory Tricot,Catherine Boussard-Plédel,Karine Michel,Alain Braud,Patrice Camy,J.L. Adam,Bruno Bureau,Virginie Nazabal +13 more
TL;DR: In this article, the absorption and emission spectra of neodymium doped sulfide glasses were recorded from the visible to the mid-IR, and the spectroscopic parameters were determined by the Judd-Ofelt method, allowing the calculation of crosssection emissions and the evaluation of quantum yields.
References
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Journal ArticleDOI
Optical absorption intensities of rare-earth ions
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Intensities of Crystal Spectra of Rare‐Earth Ions
TL;DR: In this article, the transition probability of pure-electronic electric dipole transitions between levels of the 4-fluorescence configuration perturbed by a static crystalline field is treated.
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Spectral Intensities of the Trivalent Lanthanides and Actinides in Solution. II. Pm3+, Sm3+, Eu3+, Gd3+, Tb3+, Dy3+, and Ho3+
TL;DR: In this article, the experimentally determined band intensities in the solution absorption spectra of the trivalent lanthanides were correlated with a theoretical expression derived by Judd, and the spectra were measured in a single medium, dilute acid solution, and, in most cases, in the range ≈6000-50 000 cm−1.
Journal ArticleDOI
The Spectra of the Doubly and Triply Ionized Rare Earths
G. H. Dieke,H. M. Crosswhite +1 more
TL;DR: The present status of our knowledge of the structure of the spectra of the rare earths is derived partly from experimental data of the emission spectra, which provides the energy level scheme in great detail but are difficult and laborious to analyze.