We report on thermally resilient planar waveguides fabricated nc-YSZ by direct fs-laser inscription in transparent nc-yttria stabilized zirconia (nc-YSZ) polycrystalline ceramic. The consisted of rectangular sections (4.5 × 2 mm ) the surface sample. Optical characterization at 633 and 810 nm was performed. estimate a laser-induced refractive index contrast 10 –4 . Post-waveguide-fabrication th...

Transparent oxyfluoride glass-ceramic (OxGCs) coatings with composition 1.2Nd3+ 80SiO2- 20LaF3 were prepared following a sol-gel route labelled “pre-crystallized nanoparticles route”. OxGCs are transparent materials composed by one or more fluoride nanocrystals in glass matrix. have been encouraging results powders and bulk glass-ceramics but not coatings. In the present work, aqueous suspensio...

Detailed comparative spectroscopic studies of Nd doped YAG nanocrystals, transparent ceramic and single crystal have been performed. Although most of the radiative spectral properties of Nd are almost in good agreement between the three hosts, the non-radiative losses are significantly high in nanocrystals, which are attributed due to the presence of large amount of hydroxyl groups on the nanoc...

The vanadium-titanium black ceramic (VTBC) coating on all-ceramic solar collectors has both high absorptance (0.94) and emissivity (90%). However, the thermal conductivity of is very low (1.256 W/mK). To improve heat collection efficiency VTBC collectors, this paper establishes a mathematical model based energy-conservation relationships under steady-state conditions creates corresponding compu...

It is known that the optical transparency of an oxide glass decreases with increase in size and fraction crystals during heat-treatment. Here, authors report opposite scenario, where a translucent Er3+−Yb3+ doped oxyfluoride precursor glass-ceramic (P-GC) becomes transparent increasing crystal crystallinity. Specifically, heat-treated P-GC samples, observe growth existing Ba2LaF7 particularly f...