Representative absorption spectrum of the NYCaB75 glass at room temperature.
Luminescence spectrum of the NYCaB75 glass at room temperature and λexc = 810 nm. The inset presents the integrated intensity of the band at 1060 nm as a function of Nd2O3 content.
(a) Luminescence intensity decay profile of the NYCaB25 glass (λexc = 800 nm); (b) Nd2O3 concentration dependence for 4F3/2 lifetime values in NYCaB100x glasses.
(a) Representative thermal lens transient signal for NYCaB75 sample with λexc = 514.5 nm and λ p = 632.8 nm; (b) Thermal lens phase shift (θ) against the excitation power for NYCaB100x glasses doped with different Nd2O3 concentrations.
(dots) Thermal lens phase shift divided by the absorbed pump power against the normalized lifetime Γ = τ/τ0 for the NYCaB samples. The solid line is the linear fit.
Fluorescence quantum efficiency of NYCaB100x glasses as a function of Nd2O3 concentration.
Dependence on Nd3+ concentration of fluorescence quantum efficiency (η) and figure of merit (ηN t ) for 4F3/2 level in NYCaB100x glass. Open symbols are η results obtained using the thermal lens technique; solid line is the fit of the open symbols using the Eq. (10); and dashed line is the figure of merit calculated with the solid line.
Samples and Neodymium concentrations investigated.
Experimental and calculated Nd3+ oscillator strength values for the NYCaB100x glasses.
Phenomenological JO intensity parameters for NYCaB100x glasses for three Nd3+ concentrations.
Radiative transition rates and branching ratios for NYCaB100x glasses.
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