Numerical analyses of the population dynamics and determination of the upconversion coefficients in a new high erbium-doped tellurite glass

Er-doped Tellurite glasses for planar waveguide power amplifier with extended gain bandwidth

“…Instead it appears that the lifetime of the 4 I 13/2 level is dominated by non-radiative decay due to the glass' higher phonon energy spectrum introduced through the B 2 O 3 component, for which the maximum phonon energy is a quarter of the energy gap to the ground state [6]. It should be noted that the Er-doping level of 1x10 20 cm -3 is relatively low and cross-relaxation energy transfer rates are typically small at this level [9]. The recorded fluorescence spectrum for each of the erbium doped samples is shown in Fig.…”

Enhanced 1.53μm radiative transition in Er3+/Ce3+ co-doped tellurite glass modified by B2O3 oxide

“…4 I 9/2 + 4 I 15/2 relax to the 4 I 11/2 level immediately, and the ESA of Er 3+ ions at the 4 I 11/2 level is neglected as the up-conversion emission in the Er 3+ /Ce 3+ co-doped tellurite glasses with B 2 O 3 oxide is weak especially in the TGB2 glass sample. Thus, the variations of Er 3+ populations with time at the three levels of 4 I 15/2 , 4 I 13/2 and 4 I 11/2 can be expressed as the following rate equations, respectively [39]: …”

Optical properties of Nd3+-doped and Er3+–Yb3+ codoped borotellurite glass for use in NIR lasers and fiber amplifiers

“…Moreover, the codoping of Yb 3+ ions with Er 3+ ions in different glasses has yielded enhanced luminescence properties of the Er 3+ ions [13]. So, an important need for rigorous investigation of the codoped Er 3+ Yb 3+ ions in various glass matrices exists, with a view to achieving unprecedented results in telecommunication technology [10,14,15].…”