Characterization of 4I9/2 ↔ 4F3/2 optical transitions in trivalent Nd3+ ions in GaLaS glass

Observation of 4F3/2→4I15/2 radiative transition in Nd3+ ions in GaLaS glass using frequency‐resolved PL spectroscopy

“…The above value is slightly different from what was reported earlier in Ref. [4] (~90 μs) and might be due to the better precision of present data. In addition, the JO lifetimes in Table 1 give a composite lifetime ∼86 μs.…”

“…We determined the positions of Stark levels of 4 I 9/2 and 4 F 3/2 manifolds and the emission cross-section [4]. The radiative lifetime of the metastable 4 F 3/2 manifold was determined independently from photoluminescence (PL) decay and quadrature frequency resolved spectroscopy (QFRS).…”

“…3 Results and discussion Figure 2(a) shows the PL spectrum of Nd 3+ :GaLaS ChGs from 800 to 1500 nm, which was detected with a lock-in frequency of 20 Hz and corrected for the system response using a calibration with an incandescent lamp. The most intensive PL band with the mean wavelength of 900 nm corresponds to the 4 10]. Therefore, a fast recombination process may be effectively separated from a slow process by measuring the frequency dependence of the PL amplitude.…”