Study of photoluminescence quenching in Er3+-doped tellurite glasses

Judd–Ofelt analysis and improvement of thermal and optical properties of tellurite glasses by adding P2O5

“…e¼6548 cm À 1 [39] for TZNE and e¼6628 cm À 1 for TZNP. The emission cross-section s e and is absorption cross-section s a corresponding to TZNE0.5 are shown in Fig.…”

Influence of tungsten on the emission features of Nd3+, Sm3+ and Eu3+ ions in ZnF2–WO3–TeO2 glasses

“…A rad A rad + W nr = exp rad (8) where A rad is the total radiative relaxation rate, W nr is the rate of total non-radiative transition exp -experimental lifetime, radradiative lifetime. The value of Á for the three principal levels viz., 4 F 3/2 , 4 G 5/2 , 5 D 0 of Nd 3+ , Sm 3+ and Eu 3+ ions respectively are determined and presented in Table 4.…”

“…In view of such qualities, these glasses find potential applications as IR domes, optical fibers, modulators, non-linear optical devices and infrared laser windows. These are also considered as good glasses for hosting rare earth ions since they provide a low phonon energy (∼750 nm, lower than geramanate, phosphate and silicate glasses) environment that minimizes non-radiative losses [6][7][8]. The presence of tungsten ions in these glasses, further, makes them suitable for optoelectronic devices since they exhibit photochromism and electrochromism properties.…”

Synthesis and spectroscopic properties of Er3+-doped CaF2 nanocrystals in transparent oxyfluoride tellurite glass–ceramics

“…Er 3+ -doped glass and glass-ceramics are playing important role as lasers and optical amplifiers [1][2][3][4]. Oxyfluoride tellurite glass-ceramics is an ideal optical matrix material, it also has some advantages, such as low phonon energy (maximum phonon energy ∼750 cm −1 , and borate ∼1400 cm −1 , silicate ∼1100 cm −1 and phosphates ∼1300 cm −1 ), the high up-conversion efficiency and low melting temperature, high optical transmittance, high refractive index and so on [5][6][7].…”