Journal ArticleDOI
1.3 μm emission and multiphonon relaxation phenomena in PbOBi2O3Ga2O3 glasses doped with rare-earths
Yong Gyu Choi,Jong Heo +1 more
TLDR
In this article, the 1.3 μm fluorescent emissions from PbOBi 2 O 3 ǫ 3 ε-Ga 2 o 3 glasses doped with Pr 3+ or Dy 3+ were measured.Abstract:
The 1.3 μm fluorescent emissions from PbOBi 2 O 3 Ga 2 O 3 glasses doped with Pr 3+ or Dy 3+ were measured. Modified Judd—Ofelt analysis was applied to the Pr 3+ -doped glasses to obtain intensity parameters and radiative properties. Emission from the Pr 3+ : 1 G 4 → 3 H 5 transition in heavy metal oxide (HMO) glass was centered at the wavelength of 1320 nm with a spectral bandwidth of 100 nm. The lifetime of the 1 G 4 level was 53 μs with a quantum efficiency of 9%. Excited-state absorption near the 1.3 μm emission were comparable to those in fluoride glasses. Multiphonon relaxation rates in PbOBi 2 O 3 Ga 2 O 3 glasses calculated from the lifetimes were similar to those of fluoride glasses, but were the smallest among oxide glasses.read more
Citations
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Optical transitions of rare earth ions for amplifiers: how the local structure works in glass
TL;DR: In this article, compositional changes in the structure of aluminosilicate glasses were studied, and the changes of the radiative cross section, quantum efficiency, and flatness were observed, which are especially important for the amplifiers in the WDM network system.
Journal ArticleDOI
Rare-earth-doped glasses for fiber amplifiers in broadband telecommunication
TL;DR: In this paper, the role of the Judd-Ofelt Ω6 parameters is presented, which is correlated to the Er-ligand bond covalency in glasses, and the energy level structures and resultant spectral properties of Pr3+, Nd3+ and Dy3+ ions, 1.3-μm active ions, are compared.
Journal ArticleDOI
Spectroscopic properties of Dy3+ ions in lithium borate and lithium fluoroborate glasses
P. Babu,C.K. Jayasankar +1 more
TL;DR: In this article, Dy3+-doped borate glasses modified with lithium oxide and fluoride are presented, and the intensity parameters are used to predict radiative properties that include electric (Sed) and magnetic (Smd) dipole line strengths, radiative (A) and total radiative transition probabilities, lifetimes (τR), branching ratios (βR) for the excited ( 4 K (1) 13/2, 4 F (3) 5/2), 4 P (2) 3/2, 4 M 21/2 ), 4 G (
Journal ArticleDOI
Optical properties of Dy3+-doped phosphate and fluorophosphate glasses
TL;DR: In this paper, the decay curves of Dy 3+ -doped phosphate (P 2 O 5 −+ K 2 O−+ BaO+Al 2 O 3 ) and fluorophosphate (BaO+BaF 2 ǫ+ Al 2 O3 ) glasses have been investigated using the parametric free ion Hamiltonian model.
Journal ArticleDOI
Comparative study of energy transfers from Er3+ to Ce3+ in tellurite and sulfide glasses under 980 nm excitation
TL;DR: In this article, the authors demonstrated that the population feeding from the 4I11/2 level to the 1.5 μm fluorescence emitting 4I13/2-level of Er3+ ions in low phonon energy glass hosts can be enhanced by codoping with Ce3+ under optical pumping at 980 nm.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
Electronic Energy Levels in the Trivalent Lanthanide Aquo Ions. I. Pr3+, Nd3+, Pm3+, Sm3+, Dy3+, Ho3+, Er3+, and Tm3+
TL;DR: 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°.
Book
Principles of Lasers
Orazio Svelto,David C. Hanna +1 more
TL;DR: In this paper, the authors present a survey of the most commonly used line-broadening and line-switching techniques for laser beams, including the following: 1.1.1 Semiclassical approach, 2.2.2 Allowed and Forbidden Transitions, and 3.3.3 Pumping Schemes.
Journal ArticleDOI
Heavy-Metal Oxide Glasses
TL;DR: In this paper, heavy-metal oxide glasses are defined as those containing over 50 cation percent of bismuth and lead which participate in the glass structure as network formers, and glass systems based on these heavy metal oxides in silicates, borates, phosphates, germanates, and ferrites are surveyed.
Journal ArticleDOI
Nonlinear optical susceptibilities of high‐index glasses
TL;DR: In this paper, degenerate four-wave mixing measurements of nonlinearities in a variety of high-index lead and bismuth containing oxide glasses and the chalcogenide As2S3 were performed.