Today’s internet-focused communication industry is driving a powerful transition from slower electronic systems to high-speed all-optical systems. A central effort is the miniaturization and integration of photonic devices into highly functional optical circuits. New processing and packaging technologies are now required that can precisely shape and assemble optical components to sub-wavelength...

Amorphous semiconductors are materials with a brilliant prospect for a wide range of optical applications like solar cells, optical sensors, optical devices, and memories. The purpose of the present research was to study the semiconducting optical properties of SiO2-Al2O3-CaF2 and SiO2-Al2O3-BaF2 oxyfluoride...

in spite of rapid advances in keratorefractive surgery in recent decades, the most common method for refractive error correction throughout the world is glasses, the discovery of which is attributed to the persians. other advantages include protection of the eye against trauma and radiations, correction of phorias and tropias and cosmetic reasons. the purpose of this article is to describe and ...

Oxynitride glasses are found as grain boundary phases in silicon nitride ceramics. They are effectively alumino-silicate glasses in which nitrogen substitutes for oxygen in the glass network, and this causes increases in glass transition and softening temperatures, viscosities (by two to three orders of magnitude), elastic moduli and microhardness. Calcium silicate-based glasses containing fluo...

In this work, we report the optical properties of Tm ions in tellurite glasses (TeO2-TiO2-Nb2O5) for different Tm 3+ concentrations ranging between 0.05 and 1 wt%. Judd-Ofelt intensity parameters have been determined to calculate the radiative transition probabilities and radiative lifetimes of excited states. The stimulated emission cross-sections of the infrared emissions at 1487 nm and 1800 ...

This article deals with sulfur and selenium-based glasses doped rare earth ions. It reviews the most significant glass compositions their related thermal mechanical properties, emphasis given to optical spectroscopic properties in infrared domain. Optical transparency, multiphonon relaxations, luminescence fibers planar waveguides trivalent ions are presented details. Applications as new compac...

The immobilization of technetium-99 ((99)Tc) in a suitable host matrix has proven to be a challenging task for researchers in the nuclear waste community around the world. In this context, the present work reports on the solubility and retention of rhenium, a nonradioactive surrogate for (99)Tc, in a sodium borosilicate glass. Glasses containing target Re concentrations from 0 to 10,000 ppm [by...

The formation and properties of laser-induced periodic surface structures (LIPSS) was investigated on different technically relevant glasses including fused silica, borosilicate glass, and soda-lime-silicate glass under irradiation of fs-laser pulses characterized by a pulse duration τ = 300 fs and a laser wavelength λ = 1025 nm. For this purpose, LIPSS were fabricated in an air environment at ...

The main objective of the present work was to assess gamma radiation shielding competencies and transmission factors (TFs) for some tellurite glasses in form Bi2O3–TeO2–Na2O–TiO2–ZnO. MCNPX general-purpose Monte Carlo code (version 2.6.0) utilized determination TF values at various well-known radioisotope energies different glass thicknesses from 0.5 cm 3 cm. Moreover, important ray properties ...

Glasses having compositions 20B2O3.(79.5-x) Bi2O3.xSiO2 (10 ≤ x ≤ 40, mol%) doped with 0.5 mol% of Nd ions were prepared by melt quench technique. The amorphous nature of the glasses was confirmed by X-ray diffraction studies. The spectroscopic properties of Nd ions in borate bismuth silicate glasses as a function of bismuth oxide were investigated using optical absorption and fluorescence spec...