Er–Yb codoped phosphate glasses with improved gain characteristics for an efficient 1.55 µm broadband optical amplifiers

Effect of silver nanoparticles on spectroscopic properties of Er3+ doped phosphate glass

“…Thus, incorporation of Ag as metallic NPs in glass matrix changed the ligand field of Er 3+ . As seen in Table 4, the X 2 intensity parameter in our samples is larger than those of NZLE0 phosphate [25] TZNE1 tellurite [26], and NPP30 Chlorophosphate [27] glasses. This feature reflect the asymmetry of the local environment at the Er 3+ ion site and exhibits the dependence on the covalency between rare earth ions and ligand anions [28].…”

Enhanced 1.53 μm luminescence in Er3+ -doped sodium boro silicate glasses by Yb3+ co-doping

“…Addition of suitable amount of Yb 3+ ion to the Er 3+ ion in any host prominently enhance the population of 4 I11/2 emission level of Er 3+ . The Er 3+ /Yb 3+ co-doped glasses have been considered as one of the candidates for efficient broad band amplifiers operating in the wavelength region of ~1.53 μm corresponding to the 4 I13/2 → 4 I15/2 transition for the past few years [8,9]. Though huge reports are available in literature, still there is a thirst for new materials which show an excellent performance in amplifying the telecommunication signals.…”

Insulator-half metal transition driven by M-site doping in double perovskite Ba2CrMO6 (M = Nb, Mo) from first-principles calculations

“…These studies intended for optimizing of magnetic properties of DPs for many applications in magnetoelectronic devices such as spin valves, magnetic information storage systems and sources for spin polarization in spintronics. Along this way, important aspects are the achievement of sufficiently high TC and spin polarization, such TC = 635 K in Sr2CrReO6 [8] to allow for the operation of potential devices at RT. Moreover, the increase of TC in Sr2FeMoO6 has been reported as a result of an electron doping by partial substitution of Sr 2+ by La 3+ [9].…”