Influence of annealing conditions on the optical properties of chromium-doped ceramic Y₃Al₅O₁₂

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• 作者：Hideki Yagi ; Kazunori Takaichi ; Ken-ichi Ueda ; Takagimi Yanagitani ; Alex ; er A. Kaminskii
• 关键词：YAG ceramics ; Chromium ; Annealing
• 刊名：Optical Materials
• 出版年：2006
• 出版时间：December 2006
• 年：2006
• 卷：29
• 期：4
• 页码：392-396
• 全文大小：375 K

文摘

Transparent chromium-doped Y₃Al₅O₁₂ ceramics were fabricated. The absorption and emission spectra of these ceramics were measured at room temperature. The absorption and emission spectra of Cr:Y₃Al₅O₁₂ ceramics varied with annealing conditions. By high-temperature annealing, the absorption intensity increased, and its peak wavelengths changed from 430 nm and 600 nm to approximately 465 nm and 612 nm, respectively, because the valence changed from Cr³⁺ to Cr⁴⁺. For the samples, emissions from both Cr³⁺ and Cr⁴⁺ ions were detected. However, emission from only the Cr³⁺ ions was observed in samples that annealed at low temperature or unannealed.