Raman, green and infrared emission cross-sectionsof Er^3+ doped TZPPN tellurite glass

Structural and luminescence behaviour of Er3+ doped telluro-fluoroborate glasses

“…The peak at 371 cm −1 can be contributed to the axial bending vibration mode due to O-Te-O [28]. The band assignment at around 522 cm −1 represents the isolated diborate group [29,30].…”

Absorption spectra and Raman gain coefficient in near-IR region of Er3+ ions doped TeO2–Nb2O5–Bi2O3–ZnO glasses

“…Optical gain coefficient is an important factor for evaluating the performance of a laser media. If the absorption and emission cross sections for the transitions between two laser operating levels are obtained, the optical gain coefficient, g(λ) , can be calculated from the following formula [35];…”

Novel non-toxic and red luminescent sensor based on Eu3+:Y2Ti2O7/SiO2 nano-powder for latent fingerprint detection

“…However, the J-O parameter Ω 6 is rarely reported [35], the Ω 6 intensity parameter is not determined because the 5 D 0 → 7 F 6 emission in this system cannot be detected and recorded. Additionally, it is difficult to experimentally confirm the refractive index of the studied materials, which is required in the J-O calculations.…”

“…where e is the charge of an electron, h is Planck's constant, n is the refractive index n = 1.5,ν is the transition energy of electric dipole transition in cm −1 and Einstein's coefficient of spontaneous emission [35].…”