Er-YAG，掺铒钇铝石榴石（Er:Y3Al5O12或Er:YAG）结合了不同的输出波长以及Er-YAG优异的热性能和光学性能。这是一种优秀的激光波长为2.94μm的激光晶体。这个波长是所有现有波长中最容易被水和羟基磷灰石吸收的波长，同时被认为是一种高表面切割激光。它是一种众所周知的医学应用材料。
掺杂浓度为50％的Er YAG的发射波长为2940nm，位于吸水峰的位置，可以被水分子强烈吸收。因此，它被广泛应用于整形外科和牙科领域。目前，我们参与的项目包括激光采血仪，它采用Er：YAG棒的两侧涂层和氙气灯端泵浦的结构。Er-YAG激光波长是改善多种皮肤状况和衰老的绝佳选择，包括色素沉着不良，光化性光损伤，日光弹性变性，痤疮和创伤性瘢痕形成，细纹和轻度至中度的皱纹病，粗糙的皮肤质地和皮肤松弛。
参数
| 方向 | [100] or [100] <± 0.5。 |
| 平行度 | 10〞 |
| 垂直度 | 5ˊ |
| 表面质量 | 5-Oct |
| 波前失真 | <λ/8@632 nm |
| 表面平整度 | <λ/10@632.8nm |
| 通光孔径 | >90% |
| 倒角 | 0.1mm@45° |
| 厚度/直径公差 | ±0.05 mm |
| 最大尺寸 | 直径:2mm-50mm,长度:5mm-180mm |
| 镀膜 | < 0.25% @ 2940 nm |
| 晶体结构 | 立方 – la3d |
| 晶格常数 | 12.01Å |
| 密度 | 4.56-5.11 g/cm3 |
| 熔点 | 1950°C |
| 导热系数/（W·m-1·K-1 @ 25°C） | 0.14W |
| 比热容/（J·g-1·K-1） | 0.59 |
| 抗热震性 | 790W/m |
| 热膨胀率/（10-6·K-1 @ 25°C） | 7.8 |
| 硬度（莫氏） | 8.5 |
| 杨氏模量/ GPa | 317 |
| 剪切模量/ Gpa | 54.66 |
| 消光比/ dB | 30 |
| 精密研磨 | 精密研磨 400#Grit |
| 泊松比 | 0.25 |
| 激光跃迁 | 4I11/2 → 4I13/2 (高掺); 4I13/2 → 4I15/2 (低掺) |
| 激光波长 | 2940 nm (高掺); 1645 nm (低掺) |
| 光子能量 | 6.75×10-20J@2940nm |
| 泵吸收带宽 | 600~800 nm (高掺); 1530 nm (低掺) |
| 损伤阈值 | >500MW/cm2 |
| 发射截面 | 3×10-20 cm2 |
| 荧光寿命 | 0.23 ms (高掺); 2~5 ms (低掺) |
| 折光率 | 1.7838@2940 nm |
案例
50%Er:YAG 晶体用于2940nm激光器
规格: Φ5*100mm, Φ5*110mm, Φ5*130mm, Φ6*120mm;
镀膜：S1：AR@2940nm R<0.2% ; S2：AR@2940nm R<0.2%；
50%Er:YAG 晶体用于2940nm激光器
规格: Φ3*33mm, Φ3*35mm, φ3*50mm, 10×18×0.8mm;
镀膜：S1, HR@2940nm, R>99.8%; S2, PR@2940nm, T=8-9%
2.5%Er:YAG 晶体用于1645nm激光器
规格：dia4*60mm；
镀膜：双面镀膜：AR/AR@1530&1645nm
特点
高掺杂浓度
丰富的能级结构
出色的光学质量
低散射损耗
高输出和损坏阈值
应用
参考文献
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新闻
Er:YAG晶体的生长及检验 – 2020/12/21 – 南京光宝光电科技有限公司
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