Spectroscopic properties and energy transfer process in Er3+ doped ZrF4-based fluoride glass for 2.7μm laser materials

Visible, Up-conversion and NIR (~1.5μm) luminescence studies of Er3+ doped Zinc Alumino Bismuth Borate glasses

“…As given in Table 3, the JO parameter values obtained for the present glass systems are comparable with the values reported for other Er 3+ doped glassy systems [26,[39][40][41][42][43][44][45][46][47]. The JO parameters obtained in the present work suggest that different concentrations of Er 3+ ion in ZnAlBiB glasses possess strong asymmetry and/or covalency of the RE ion sites.…”

Tunable mid‐infrared luminescence from Er3+‐doped germanate glass

“…The Ω λ parameters, together with the values reported for other Er 3+ -doped hosts, are given in Table 2. As shown in Table 1, the calculated values are in good agreement Table 2 that the Ω 2 values of the samples are obviously higher than those of fluoride and tellurite glass (24,29), but lower than that of bismuthate glass (30) 31). In addition, the Ω 6 values of the samples are much lower than the other reported values, as also listed in Table 2, signifying lower local optical basicity (31).…”

“…Figure 2 indicates the room temperature absorption spectra of the samples in the wavelength region of 380-1600 nm. All absorption bands corresponding to the transitions starting from the ground state 4 (21,23,24). There is no obvious shift in the wavelength of the absorption peaks while the absorption intensity is proportional to Er 3+ concentration, revealing homogeneous incorporation of the Er 3+ ions in the glassy network without clustering and changes in the local ligand field.…”

Natural discharge after pulse and cooperative electrodes to enhance droplet velocity in digital microfluidics

“…The W mp in TZF30 glass is calculated to be 207 s −1 , which is slightly larger than fluoride glass (7.24 s −1 ), 26 but significantly smaller than that of germanate glass (9.8 × 10 3 s −1 ) 7 and sillicate glass (7.13 × 10 4 s −1 ). 26 This result indicates that the phonon energy of oxyfluoride tellurite glasse is low enough to facilitate the radiative transition from 4 I 11/2 to 4 I 13/2 level. − is an dominant quenching center not only for 2.7 μm emission but also for 1.5 μm emission in the Er 3+ -doped glass.…”