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Nd:KGW

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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 / dT0.4*10-6 K-1
折射率@ 1.06μmnp=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-37.248
比热容Cp500 Jkg-1K-1

光谱性质

激光波长(nm)1067
发射截面(pm2)a32.3
增益带宽(nm)2.73
荧光寿命(μs)110 at 3% doping
导热系数(Wm-1K-1~3

吸收和发射光谱

Nd-KGW激光晶体-吸收谱polar-南京光宝-CRYLINKNd-KGW激光晶体-吸收谱-南京光宝-CRYLINK
Nd-KGW激光晶体-Fluorescence-南京光宝-CRYLINKNd-KGW激光晶体-发射谱polar-南京光宝-CRYLINK

参考文献

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