Er:YAP
Er:YAP具有3μm的大發射截面，是Er:YAG的三倍大。 高摻雜的Er:YAP可以發射2.73μm 波長的激光，低摻雜的Er：YAP晶體可以發射1.66μm 的激光。Er:YAP晶體的發射光譜和激發光譜顯示出在人眼安全區域內有較寬的發射帶，其峰值在1545nm和1608nm附近，并且泵浦帶適用于常見的800nm和970nm二極管激光器，這表明YAP是一種 1.5μm人眼安全范圍內的二極管泵浦激光器的候選晶體。與YAG相比，釔鈣鈦礦鋁（YAP）由于具有較高的導熱率（～13.3 W m-1 K-1），良好的機械性能和較低的光子能量，有望成為有效激光發射的基質材料。 而且，Er:YAP是最有前途的激光材料之一，可以提供高功率的中紅外相干光束。
特點
- 更高的熱導率
- 較低的光子能量
- 良好的機械性能
- 豐富的能級結構
- 高摻雜濃度
物理和化學特性
| 化學公式 | Er:YAlO3 |
| 晶體結構 | 斜方晶體-Pbnm |
| 分子質量 | 163.884 |
| 外形 | 半透明結晶固體 |
| 方向 | b軸-Pbnm |
| 熔點 | 1870 °C |
| 密度 | 5.35 g/cm3 |
| 比熱容 | 0.557 J/g·K |
| 導熱系數 | 11.7 W/m·K (a-axis), 10.0 W/m·K (b-axis), 13.3 W/m·K (c-axis) |
| 熱膨脹系數 | 2.32 x 10-6??K-1?(a-axis), 8.08 x 10-6??K-1?(b-axis), 8.7 x 10-6??K-1??(c-axis) |
| 精確質量 | 163.872 g/mol |
| 單同位素質量 | 163.872 g/mol |
光學和光譜性質
| 激光躍遷 | 4S3/2→4I9/2 | 4I11/2→4I13/2 |
| 激光波長 | 1.66 μm | 2.73 μm |
| 泵浦帶 | 0.6-0.8 μm | 1.53 μm |
| 發射截面 | 3 μm | |
| 折射率 | 1.94-1.97 (@ 632.8 nm) | |
吸收和發射光譜
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參考文獻
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