Spectroscopic investigations on 1.53 μm NIR emission of Er3+ doped multicomponent borosilicate glasses for telecommunication and lasing applications

Energy transfer analysis and realization of cool to warm white light in Dy3+/Sm3+/Er3+ triply doped multicomponent borosilicate glass for white light generation

“…From Figure 3, the bands observed at 407, 522, and 546 nm were assigned as ( 2 G, 4 F, 2 H) 9/2 → 4 I 15/2 , 2 H 11/2 → 4 I 15/2 , and 4 S 3/2 → 4 I 15/2 transitions, respectively, and among these, the transition that corresponded to 4 S 3/2 → 4 I 15/2 (546 nm) was observed to be more intense in the visible region. [ 18 ]…”

Structural and optical investigations of RE3+: Yb, Er, Sm, Nd, Ce-doped multi-functional silica glasses for photonic applications

“…The six peaks centered at 369 nm, 403 nm, 444 nm, 461 nm, and 480 nm (and 497 nm) correspond to the transitions from the ground state 4I 15/2 to 4G 9/2 + 4G 11/2 , 2G 9/2 , 4F 3/2 , 4F 5/2 , and 4F 7/2 respectively [67,90]. While excitation peaks of relatively high intensity could be observed at 369 nm and 403 nm, the emission spectrum of the glasses was recorded by exciting the sample at 379 nm, wherein the Er 3+ ions undergo ground state absorption (GSA): 4I 15/2 → 4G 11/2 [64]. The ions decay non-radiatively to different energy states before luminescing in the blue, green, and red regions as follows.…”

Investigations on the fluorescence and radiative parameters of Sm3+ activated BaO-ZnF2-K2O-SiO2-B2O3 glass for laser applications

“…The foremost region considered as a steady-absorption region associated with exciton photon coupling. Another section that comprise of inter band electronic transitions and strong absorptions are termed as the Tauc's region where the energy gap is evaluated and the third sector is called as urbach region [2,7]. The Tauc plot for FABS1 glass portrayed as figure 2 and obtained energy bandgap value for the direct allowed transition is Eg= 3.93 eV.…”

“…Growing technological needs of luminescent materials that found potential applications in diverse optoelectronic devices have been intensified the research in scientific community for the invention of novel rare earth embedded materials [1][2][3]. Glasses regarded to be the active contenders of host matrices appraised in this context due to their excellent optical transparency, thermal and mechanical stability, large rare earth ion solubility and high luminescence efficiency.…”