Abstract
AbstractThe optical quality and microstructure of the Tb3Al2.5 Ga2.5O12 transparent ceramic were investigated and compared with those of terbium gallium garnet (Tb3Ga5O12 TGG) and terbium aluminum garnet (Tb3Al5O12 TAG). The transmission of the Tb3Al2.5 Ga2.5O12 ceramic was as high as 80% in the visible and near‐infrared (IR) regions, which was close to the theoretical value. The Verdet constant of the Tb3Al2.5 Ga2.5O12 ceramic measured at 632.8 nm and room temperature was −150.6 rad/Tm, which was 12% larger than that of the TGG single crystal and 13% smaller than that of the TAG single crystal, and the Tb3Al2.5 Ga2.5O12 ceramic showed the highest transparency among these three samples.
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