Line-narrowed fluorescence spectra and site-dependent transition probabilities ofNd3+in oxide and fluoride glasses

Thermal stability and spectroscopic properties of Er3+-doped lead fluorogermanate glasses

“…[1]. In that paper, a large Stark splitting and a great inhomogeneous broadening was observed at a low temperature in the fluorophosphates glass under the excitation of a short laser pulse with a spectral width o0.1.…”

“…The study of glasses containing more than one anion has revealed the possibility of the creation of glasses where the properties are varied by replacing the traditional oxygen by another anion, particularly by halides [1,2]. It is known that the mechanical strength and viscosity of oxide glasses are often lowered by partial replacement of oxygen by halides [2].…”

Optical Properties of Lanthanide -Containing Halide-Modified Zinc Tellurite Glasses

“…Particularly important is the enhanced control this provides over the bulk vibrational characteristics of the host matrix. Not surprisingly this feature has led to several recent examinations of network forming glasses [6,7] in terms of their suitability as rareearth doped devices. Tellurite glasses [5] appear to possess a suitable compromise of needed properties: (I) low maximum phonon energy ( 5 800 cm-') which is a prominent factor determining the degree of non-radiative losses, (2) high refi-active index and low UV edge, required in many optical component applications, and (3) low glass transition temperatures.…”

<title>Gain saturation studies in LG-750 and LG-770 amplifier glass</title>

“…Moreover, there is significant variation in the cross section values reported in the literature (2.0-4.8 x 10 -20 cm 2 for phosphate glass). [7][8][9][10][13][14][15]21,22]. Consequently, simulation of the energy extraction for multitransition, inhomogeneously broadened lines is difficult and uncertain because the positions, widths, strengths, and correlations of the individual transitions are not accurately known.…”

“…This width is determined by the glass network-forming and networkmodifying ligands -the more uniform the coordination shell around the ion, the narrower the fluorescent line width. Performance of neodymium-doped glass amplifiers is complicated by the Stark splitting and inhomogeneous broadening of the levels of the 4 F 3/2 to 4 I 11/2 lasing transition [7][8][9], spectral migration of energy between excited centers [8][9][10][11], scatter of the stimulated transition cross sections for the Stark components of individual ions [8,9,12], dependence of the cross sections on the polarization of laser radiation [13][14][15][16][17][18], etc.…”