Nd：KGW
Nd：KGW晶体是一种可以实现高浓度掺杂的激光晶体，因为该晶体可以与高浓度的Nd离子混合并且具有较大的发射面积，因此其单脉冲和低重复激光性能优于Nd：YAG 。Nd：KGW晶体的吸收带在808 nm处，可以有效地与LD泵浦光源耦合（发射波长为808 nm），从而提高其发光效率。此外，它的半高和半宽为12 nm，使其能够适应LD发射波长随温度的漂移，这有利于进行二极管泵浦KGw激光实验和器件研究。Nd：KGW不仅可以实现自由振荡，Q开关，锁模操作，还可以实现拉曼转换。
Nd:KGW晶体是由受激拉曼散射产生的晶体，经过倍频后可以成为可见光波段的多波长光源。
Nd：KGW晶体的拉曼特性取决于其高激发光束截面、低泵浦阈值、高输出能量、高转换效率以及两个高拉曼增益系数（768和901 cm-1）。拉曼晶体的基频光分别为911 nm，1067 nm和1351 nm，经过倍频后可产生0.455 um，0.533 um和0.675 um的红，黄和蓝光，可用于材料加工，光通信，遥感，医药，环境监测，精密计量等领域。
物理性质
| Nd浓度 | 2.2%(cw),3%(quasi-cw) |
| 荧光寿命 | 130 μs |
| 受激发射截面 | 3.7*10-19 cm2 |
| 跃迁波长 | 1067 nm |
| 导热系数 | Ka=2.6 W/Km |
| Kb=3.8 W/Km | |
| Kc=3.4 W/Km | |
| dn / dT | 0.4*10-6 K-1 |
| 折射率@ 1.06μm | np=1.978 |
| nm=2.014 | |
| ng=2.049 | |
| 热膨胀系数 | (100):4*10-6 K-1 |
| (010):3.6*10-6 K-1 | |
| (001):8.5*10-6 K-1 | |
| 密度（g * cm-3） | 7.248 |
| 比热容Cp | 500 Jkg-1K-1 |
光谱性质
| 激光波长（nm） | 1067 |
| 发射截面（pm2）a | 32.3 |
| 增益带宽（nm） | 2.73 |
| 荧光寿命（μs） | 130 at 3% doping |
| 导热系数（Wm-1K-1） | ~3 |
吸收和发射光谱
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参考文献
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