Abstract
Enhancement of the laser emission efficiency of Yb:Y<sub>2</sub>O<sub>3</sub> ceramics via multi-step sintering method fabrication
Highlights
Y2O3 sesquioxide is a promising host material for solid-state lasers due to its high thermal conductivity (∼13.5 Wm-1K-1), wide transparency range (0.2 ÷ 8 μm), high refractive index (1.9 to 2.1 in the 300 ÷ 800 nm spectral range), or its low cut-off phonon energy (380 cm-1) [1]
5.0 at.% Yb:Y2O3 transparent ceramics were obtained by solid-state reaction and multi-step sintering (MSS) method using an optimal selected content of 9.0 at.% La2O3 and 2.0 at.% ZrO2 as sintering additives
It was observed that the grains become more uniform in the case of Yb:Y2O3 ceramic obtained by the MSS method
Summary
Y2O3 sesquioxide is a promising host material for solid-state lasers due to its high thermal conductivity (∼13.5 Wm-1K-1), wide transparency range (0.2 ÷ 8 μm), high refractive index (1.9 to 2.1 in the 300 ÷ 800 nm spectral range), or its low cut-off phonon energy (380 cm-1) [1]. 5.0 at.% Yb:Y2O3 transparent ceramics were obtained by solid-state reaction and multi-step sintering (MSS) method using an optimal selected content of 9.0 at.% La2O3 and 2.0 at.% ZrO2 as sintering additives. Based on the chemical formula (Yb0.05La0.09Zr0.02Y0.84)2O3, the raw powders were blended and ball milled in ethanol with agate balls and dried and sieved. The powder mixture was pressed into green bodies using a stainless steel die set, and isostatically pressed at 250 MPa to enhance the green body's strength.
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