Dependence of spectroscopic and thermal properties on concentration and temperature for Yb:Y2O3 transparent ceramics

The preparation of Yttrium Aluminosilicate (YAS) Glass Fiber with heavy doping of Tm3+ from Polycrystalline YAG ceramics

“…Though excited by different pump sources, the fluorescence lifetime of Tm 3+ : 3 F 4 energy level (@1950 nm) decreases with the increase in Tm 3+ concentration. This also can be attributed to the stronger interaction between Tm 3+ ions at a higher concentration, and thus a depletion of the population inversion …”

High performance of La-doped Y2O3 transparent ceramics

“…As shown in Fig. 6(c), the decrease in thermal diffusivity through the increase of temperature is attributed to the strong phonon-phonon scattering [51]. In particular, as shown in Fig.…”

“…In here, κ is the thermal conductivity, λ is the thermal diffusivity, C p is the constant pressure heat capacity, and ρ is the relative density. As the grain size is several orders of magnitude larger than the average phononfree path in the sample, the impact of the grain size on the heat transfer is not dominant [51]. As shown in Fig.…”

Fabrication of 5 at.%Yb:(La 0.1 Y 0.9 ) 2 O 3 transparent ceramics by chemical precipitation and vacuum sintering

“…7 is the absorption and emission spectra of 5 at.% Yb : (La 0.1 Y 0.9 ) 2 O 3 transparent ceramics at room temperature. It is shown that there are three main absorption peaks centered at 906, 951 and 976 nm corresponding to 2 F 7/2 / 2 F 5/2 transitions of Yb 3þ ion [33,34]. The absorption coefficient (a) and absorption crosssection (s abs ) can be determined by the following expressions [35]:…”