Influence of lattice modifier on the nonlinear refractive index of tellurite glass

Abstract

We studied the influence of different lattice modifiers (Nb 2 O 5 , Bi 2 O 3, or TiO 2) on the nonlinear refractive index of a tellurite glass matrix by using the Z-scan technique. Based on the ability of the lattice modifiers to decrease the band-gap energy while simultaneously increasing the linear refractive index of the TeO 2-based glass, we investigated how these modifiers affect the nonlinear refractive indices. All studied glass presented high nonlinearities, and the addition of lattice modifiers made only a small contribution to increasing magnitude. These results could be explained through the observation of the band-gap energy reduction, which is related to the increase in the non-bridging oxygen content with the addition of the lattice modifier. The increase in the refractive index nonlinearity is explained by the optical basicity and the high electronic polarizability of the modifiers ions.

The fabrication of nanodiamond doped tellurite germanate glass with robust structure and its luminescence

“…The above bands have been contributed by three different types of stretching vibrations, ie, the stretching modes of Te‐O‐Te or O‐Te‐O linkage, stretching modes of Te‐O bond in TeO 4 trigonal bipyramid (tbp), and bending modes of Te‐O bond in TeO 3+1 or TeO 3 trigonal pyramid (tp) units, respectively. These characteristic peaks are similar to those reported previously for tellurite glasses 39–41 . Despite the shape of the bands is not changed by bits of GeO 2 and B 2 O 3 addition, slight shifts of band positions happen in TZNGB glass.…”

“…These characteristic peaks are similar to those reported previously for tellurite glasses. [39][40][41] Despite the shape of the bands is not changed by bits of GeO 2 and B 2 O 3 addition, slight shifts of band positions happen in TZNGB glass. The blue shift of Te-O-Te stretching vibration is due to the deformation of Te-O-Te bond caused by the introduction of GeO 2 .…”

High‐Quality Acousto‐Optic Modulators with High Diffraction Efficiency, Polarization Extinction Ratio, and Small Insertion Loss Based on a Novel BaO–TeO2–WO3 Glass

“…[27,28] Tellurite glass not only has good forming ability but also has a large refractive index in the visible to nearinfrared band. [29,30] As is well known, a large refractive index is conducive to the occurrence of the elastic-optic effect. [31] Therefore, we speculated that tellurate glass may combine the advantages of the excellent AO properties of TeO 2 crystal and the easy large-size preparation of glass, and will efficiently promote the development of the AO field.…”

Structure of copper tellurite and borotellurite glasses by neutron diffraction, Raman, 11B MAS-NMR and FTIR spectroscopy

“…(8,9) The addition of transition metal oxides in tellurite glasses modifies the structure by forming new ionic bonds and creates nonbridging oxygens that affect the electrical conductivity, thermal stability and optical properties of glasses. (10)(11)(12)(13) The addition of metal ions elongates one oxygen-tellurium linkage in TeO 4 and forms TeO 3+1 and TeO 3 structural units. (14)(15)(16) It is important to determine the structural properties of tellurite glasses; in particular the Te 4+ and the modifier ion co-ordination environment, bond lengths, nearest neighbour distances and the bond angle distributions to model the mechanical, optical, thermal, electrical and magnetic properties of glasses.…”

“…Figure13. FTIR absorbance spectra of copper tellurite and borotellurite glasses[Colour available online] …”