Laser action has been demonstrated in chalcogenide glass microsphere. A sub millimeter neodymium-doped gallium lanthanum sulphide glass sphere was pumped at 808 nm with a laser diode and single and multimode laser action demonstrated at wavelengths between 1075 and 1086 nm. The gallium lanthanum sulphide family of glass offer higher thermal stability compared to other chalcogenide glasses, and ...

Titanium-doped gallium lanthanum sulfide (Ti:GLS) and gallium lanthanum oxysulfide (Ti:GLSO) glasses have an absorption band at 500–600 nm that cannot be fully resolved because of its proximity to the band edge of the glass. At concentrations 0.5% a shoulder at 980 nm is observed in Ti:GLS but not in Ti:GLSO. The emission spectra of Ti:GLS and Ti:GLSO both peak at 900 nm with lifetimes of 67 an...

Bismuth ferrite (BiFeO3) nanocomposites were synthesized using a novel nano-agitator bead milling method followed by calcination. oxide and iron nanoparticles mixed in stoichiometric ratio milled for 3 h calcined at 650 °C air. X-ray diffraction with Rietveld refinement, scanning electron microscopy, transmission microscopy techniques used to elucidate the structure of BiFeO3. The particle diam...

This paper presents experimental analysis and results of GaN (being a III-V semiconductor) doped with Ferrite elements synthesized using Sol-Gel technique which are carried out at National Chemical Laboratory, Pune Maharashtra. The GaN is employed as dopant for x=1 and x=5, in the formula Ga(2x) N Fe2(49-x) O3 . A non-spinel ferrite system ( Fe2 O3) is chosen for our study. The XRD (Structural)...

The aluminum coordination state in bismuth doped silica glass, which has new broad infrared emission at 1.3 lm regions, was investigated by using Al NMR, and it is demonstrated that 6-fold coordinated aluminum ions with corundum structure are dominant in bismuth doped silica glass until Bi2O3 concentrations of 1.0 mol% with Al2O3. The aluminum ion efficiently affects the creation of a Bi lumine...

The ferroelectricity of multivalent codoped Bismuth ferrite (BiFeO3; BFO) nanoparticles (NPs) is revealed and utilized for photocatalysis, exploiting their narrow electronic bandgap. photocatalytic activity ferroelectric photocatalysts BiFe0.95Mn0.05O3 (BFM) NPs mono-, di-, or tri-valent cations (Ag+, Ca2+, Dy3+; MDT) coincorporated BFM are studied under ultrasonication in acidic conditions. It...

Abstract Bismuth ferrite (BiFeO 3 ) is an interesting multiferroic material due to its ferroelectric properties at room temperature. In this study, Bi 1− x Pr FeO and BiFeO films were grown on quartz substrates by the chemical solution deposition method 600 o C of annealing Variation in molar concentration was set ( = 0.03, 0.05, 0.1, 0.2) investigate their crystal structure optical characteris...

The purpose of this work is to study the effect lanthanum (La) concentration on phase formation, conductivity, and thermophysical properties perovskite-like strontium ferrite ceramics. At same time, key difference from similar studies possibility obtaining two-phase composite ceramics, presence various phases in which will lead a change structural, strength, conductive properties. To obtain cer...

To accommodate rapidly increasing quantities of information and communication, optical fiber transmission technology with high-speed high-capacity is demanded. The development of an optical gain medium and fiber amplifiers to cover the 1250~1650 nm region, which is the entire optical telecommunication windows of silica fiber, becomes an important issue for ultra-wide broadband optical communica...

A preparation method is described of monophasic y t t r i a s tab i l ized zirconia doped with Bi203. This material is prepared from a homogeneous power which, a f te r pressing, is sintered in a Bi203 atmosphere. The resu l t ing ceramic has a composition of 0.78Zr02-0.206 YO1.5-O.O14Bi01. 5. The grain boundaries are enriched with bismuth. A re la t i ve density of 95% of the theoret ica l one...