Nd3+-doped TeO2–PbF2–AlF3 glasses for laser applications

Abstract

a b s t r a c tA study of the optical properties of Nd 3+ ion in TeO 2 -PbF 2 -AlF 3 glasses has been carried out for different Nd 3+ concentrations. Based on the Judd-Ofelt theory, intensity parameters and radiative properties were determined from the absorption spectra. Focusing on the suitability of this host for laser applications, the spectroscopic quality factor v was obtained with a value of 1.07, a value of the order of other compositions proposed as laser hosts. For the most intense emission corresponding with the 4 F 3/2 ? 4 I 11/2 transition (1.06 lm), the absorption and emission and have been calculated with values of 1.20 Â 10 À20 cm 2 , 2.08 Â 10 À20 cm 2 . A positive value for the gain cross-sections has been found for a population inversion factor c of 0.4 in the spectral range from 1060 to 1110 nm. All these results suggest the potentially use of this system as a laser host.

Nd3+‐Doped Lead Boro Selenate Glass: A New Efficient System for Near‐Infrared 1.06 μm Laser Emission

“…4 I 11/2 and 4 F 3/2 ! 4 I 9/2 transitions; [41] it is found to be comparable to that reported for several Nd 3þdoped glasses. [42][43][44][45][46] The emission spectra of titled glasses recorded at λ exc ¼ 808 nm.…”

“…The obtained values of Ω λ are found to be analogous to those of Nd 3+ ions entrenched in many other glass systems reported previously by several authors. [ 32,37–43 ] We have observed a decrement in Ω 2 value as the content of SeO 2 is increased in the glass matrix (Table 6); such decrement suggests declining degree of covalency of the glass network. [ 19 ] The spectroscopic quality factor, Ω 4 /Ω 6 , is known as a factor that gives the information on the fluorescence efficiency between 4 F 3/2 → 4 I 11/2 and 4 F 3/2 → 4 I 9/2 transitions; [ 41 ] it is found to be comparable to that reported for several Nd 3+ ‐doped glasses.…”

“…[ 32,37–43 ] We have observed a decrement in Ω 2 value as the content of SeO 2 is increased in the glass matrix (Table 6); such decrement suggests declining degree of covalency of the glass network. [ 19 ] The spectroscopic quality factor, Ω 4 /Ω 6 , is known as a factor that gives the information on the fluorescence efficiency between 4 F 3/2 → 4 I 11/2 and 4 F 3/2 → 4 I 9/2 transitions; [ 41 ] it is found to be comparable to that reported for several Nd 3+ ‐doped glasses. [ 42–46 ] Such comparable value suggests the possible lasing nature of 4 F 3/2 → 4 I 11/2 (1.06 μm) emission transition.…”

Heat Treatment Effect on Eu3+ Doped TeO2-BaO-Bi2O3 Glass Systems with Ag Nanoparticles

“…Superior properties, for instance, mechanical and thermal stability, high devitrification resistance, and suitable infrared transparency, make tellurite glasses promising materials for variety of applications related to the field of optics, for example, light upconversion materials, lasers, solar cells, or optical amplifiers [1][2][3][4][5][6]. Additionally, these glasses are suitable for utilization as luminescent materials owing to their low phonon energy (700 cm −1 ) in comparison to other oxide glasses and wide transmission window.…”

Lead Borate Glasses and Glass-Ceramics Singly Doped with Dy3+ for White LEDs

“…Rare earth doped inorganic glasses are promising amorphous materials for tricolor W-LEDs (white light emitting diodes), solid-state lasers emitting visible light or near-infrared radiation, and other optoelectronic device applications [1][2][3][4][5]. In particular, white light-emitting devices have attracted considerable interest for their use in diodes and liquid crystal monitor screens.…”