The infrared spectra of xPbO (1−x−z)SiO2zP2O5 glasses with a PbO:SiO2 molar ratio of 3:2 and z=0,1,2,5,30,40 and 50 mol% have been examined in the region 4000-400 cm, together with XRD. The structure of PbO-SiO2 binary glass is significantly different from that of P2O5 substituted glasses. The low amount of P2O5 containing PbO-SiO2 glasses results in infrared spectra of the same pattern as 3:2 ...

A typical optical fiber is usually constructed of a silicon (glass) material, however, plastic and quartz are also available but normally for data transmission. Today most of all optical fibers manufactured consist of a lightconducting glass core surrounded by a thin layer of glass cladding with a lower refractive index. This cladding serves to protect the core finish. All fibers used in infrar...

Single-mode Ge28Sb12Se60 strip waveguides, fabricated with thermal evaporation and lift-off, were demonstrated at 1.03 μm. The linear and nonlinear optical properties of these waveguides were shown to be similar to bulk samples, with differences attributed to small variations in composition of ~4 atomic % or less. From z-scan measurements at 1.03 μm using circularly polarized, ~200 fs pulses at...

INTRODUCTION The endoscopy is nowadays the basic diagnostic method in otolaryngology. However, the size and distance of the video display and the location of the monitor continue to be impediments to endoscopy due to the inadequate alignment of the optical axis. AIM In this study, I evaluate the practical usefulness of video glasses in endoscopy. METHODS The video glasses, weighing 115 g, w...

The stabilization of inorganic waste of various nature and origin, in glasses, has been a key strategy for environmental protection for the last decades. When properly formulated, glasses may retain many inorganic contaminants permanently, but it must be acknowledged that some criticism remains, mainly concerning costs and energy use. As a consequence, the sustainability of vitrification largel...

This paper investigates the effects of material parameters optical glasses on polishing rate these glasses. For this purpose, removal various was determined in laboratory tests under identical conditions with respect to pad and suspension. The then evaluated for its dependence parameters. goal is derive a rule thumb which allows an estimation obtainable surface quality based certain workpiece c...

Chalcogenide glasses are emerging as important enabling materials for low-cost infrared imaging by virtue of their transparency in the key short-wave infrared (SWIR) to long-wave infrared (LWIR) bands and the ability to be mass produced and molded into near-net shape lenses. In this paper, we introduce a new family of chalcogenide glasses, which offer visible as well as infrared transmission an...

Downconversion processes which include visible and near-infrared luminescence at high energy excitation have been investigated in Yb3+/Pr3+ doped TeO2-ZnO-BaO glasses. The decrease of the DC emission intensities Pr3+ ions with increasing mole % amount is attributed to concentration quenching. CIE chromaticity coordinates perceived shifted from orange red region depending on increase pump power....