Influence of Er3+ ions on structural and fluorescence properties of SiO2-B2O3- Na2Co3-NaF-CaF2 glasses for broadband 1.53 μm optical amplifier applications

Enhanced 1.5 μm emission from Yb3+/Er3+ codoped tungsten tellurite glasses for broadband near-infrared optical fiber amplifiers and tunable fiber lasers

“…Moreover, positive gain coefficient is obtained when p is higher than 0.2, indicating a lower pump threshold. It is worth noting that the maximum gain coefficient of TWYE-1 glass is 4.07 cm À1 at 1534 nm, which is larger than those values reported in borosilicate glass (1.01 cm À1 ),22 phosphate glasses (1.02 cm À1 ),36 bismuthate glass (3.51 cm À1 )…”

Optical, emission, and excitation dynamics of Eu3+‐doped bismuth‐based phosphate glass for visible display laser applications

“…The absorption spectra show in total, eight absorption peaks centred at 361, 382, 394, 402, 412, 465, 525 and 535 nm and the corresponding transitions 7 F 0 → 5 D 4 , 7 F 0 → 5 L 7 , 7 F 0 → 5 L 6 , 7 F 1 → 5 L 6 , 7 F 1 → 5 D 3 , 7 F 0 → 5 D 2 , 7 F 0 → 5 D 1 , and 7 F 1 → 5 D 1 , respectively, due to the Carnall intra 4f transitions of Eu 3+ ions [ 19 ] , and were used to assign these spectral transitions and their signifying band locations, which were identical, as described previously. [ 20–24 ] Among the trivalent RE ions, only the Eu 3+ ions exhibited two thermally occupied ground states ( 7 F 0 and 7 F 1 ). In host materials doped with Eu 3+ ions, absorption transitions from both the 7 F 0 (ground state) and 7 F 1 (thermally filled state) occurred due to the smaller energy difference (360 cm −1 ) between these levels.…”

“…5 D 1 , respectively, due to the Carnall intra 4f transitions of Eu 3+ ions [19] , and were used to assign these spectral transitions and their signifying band locations, which were identical, as described previously. [20][21][22][23][24] Among the trivalent RE ions, only the Eu 3+ ions exhibited two thermally occupied ground states ( 7 F 0 and 7 F 1 ). In host materials doped with Eu 3+ ions, absorption transitions from both the 7 F 0 (ground state) and 7 of Eu 3+ ions due to the structural modification and nonbridging oxygen (NBO) forming in the network.…”

Erbium(III) ion‐doped borate‐based glasses for 1.53 μm broad band applications

“…The JO parameters and radiative characteristics of erbium ions in the glasses have been determined using the absorption spectrum. [16] SANSCEr10 [33] SBNCEr05 [34] BLK1.0Er [35] PKAPbNEr10 [36] Peak…”

“…The decay profiles, under 379 nm excitation, are recorded for 4 4 along with some reported erbium(III) ion-doped systems. [16,[33][34][35][36]…”