In this work the effects of heat generation on the modes of Yb:Glass double clad fiber laser were investigated. The thermal dispersion and thermally-induced birefringence were considered when the gain medium becomes an anisotropic medium. The results showed considerable modifications of laser modes profiles, in particular for transfer magnetic (TM) and transfer electric (TE) modes which their p...

A novel extension to the molten core method was employed realize a glass-clad, crystalline gallium arsenide (GaAs) fiber for first time author’s knowledge. GaAs is of considerable interest its optoelectronic and nonlinear properties, but decomposition volatility, usually leading incongruent solidification, normally preclude melt-processing under ambient conditions into an optical fiber. Present...

Stainless steel clad rebar (SCR) was investigated because it may become a cost-effective means of controlling corrosion in concrete under very aggressive environments. Sound SCR (316L cladding) resisted corrosion in saturated Ca(OH)2 solution (SCS) with up to 5 wt% chloride. Cladding breaks on SCR induced significant corrosion of exposed underlying CS in SCS with only 1 wt% chloride. A computer...

Low levels of online student engagement impact negatively on success and adversely affect attrition. Course learning analytics data (CLAD), combined with nudging initiatives, have emerged as strategies for engaging students. This paper presents a mixed method case study involving staged intervention strategy focussing the employment timely, strategic communication interventions conducted across...

The present work considers the results on synthesis of composite clad powder systems with “core-shell” type structure for spraying wear-resistant metal-ceramic coatings. Powders highly hard TiB 2 and HfB borides were used as a core powder, titanium was to create coating their surface. cladding layer is synthesized by iodine transport method. Powder uses method detecting one component another ga...