Broadband NIR emission in novel sol–gel Er3+-doped SiO2–Nb2O5 glass ceramic planar waveguides for photonic applications

Composition dependence of the optical and structural properties of Eu-doped oxyfluoride glasses

“…All the spectra were normalized to the peak intensity of 5 In addition, the broadband emissions located in the range of 400 550 nm, which are due to the allowed electronic transitions from states of the 4 f 6 5d 1 configuration to the ground state of the 4f 7 ( 8 S 7/2 ) electronic transitions of Eu 2+ ions [28,29], can be clearly observed for samples SBC2 to SBC8, in particular for samples SBC5 to SBC8. We notice that the emission of Eu 2+ occurs in sample SBC1.…”

Effect of Dy3+ ions concentration on optical properties of lead borosilicate glasses for white light emission

“…From the emission spectra of Dy x :LBS glasses, the blue (487 nm) and yellow (577 nm) emission bands are observed and the band at 577 nm corresponding to the 4 F 9/2 → 6 H 13/2 transition is strongly affected by the environment of the host compared to the band at 487 nm corresponding to the 4 Table 7.…”

“…Rare earth (RE) doped glasses, due to their high emission efficiencies have been studied by several researchers for the fundamental and technological applications in the fields of laser materials, sensors, scintillators, display devices, fiber amplifiers and waveguides [1][2][3][4]. Rare earth ions emit intense radiations in the ultraviolet (UV)-visible (VIS) and near infrared (NIR) regions due to the 4f → 4f and 4f → 5d transitions under different excitation wavelengths.…”

“…The decay profiles for the4 F 9/2 excited level of Dy 3+ ions in Dyx:LBS glasses. concentrations and turned into the non-exponential nature at higher concentrations of Dy 3+ ions.…”

Glassy Materials and Light: Part 2

“…Com isto, na literatura encontramos diferentes estratégias e/ou materiais com propriedades espectroscó-picas adequadas para operar tanto na banda C como banda L e S. Recentemente, foram demonstrados resultados promissores quanto à luminescência na região do infravermelho próximo em guias de onda planar, especialmente para aplicação como amplificadores ópticos para sistemas de telecomunicações [17][18][19][20][21] de materiais a base de SiO 2 preparados por sol gel contendo nanocristais de óxido de tântalo ou óxido de nióbio dopados com íons Er…”