对于激光强电场显示二次以上非线性光学效应的晶体。非线性光学晶体是一种功能材料，其中的倍频（或称“变频”）晶体可用来对激光波长进行变频，从而扩展激光器的可调谐范围，在激光技术领域具有重要应用价值。
物理&光学性质
|
晶体结构 |
Tigonal,Space Group R3c |
Otthorhombic,Point Group mm² |
Otthorhombic,Point Group mm² |
Tigonal,Space Group R3c |
|
透过范围 |
189-3500nm |
350-4500nm |
160-2600nm |
420-5200nm |
|
含晶细胞 |
A=b=12.532 Å C=12.717 Å |
A=6.404 Å B=10.616 Å C=12.814 Å |
A=8.44731Å B=7.3788 Å C=5.1395 Å |
a=0.515Å c=13.863Å |
|
熔点 |
1095+/-5℃ |
1172℃ Incongruent |
834℃ |
1255+/-5℃ |
|
居里温度 |
925+/-5℃ |
936℃ |
5 |
1140+/-5℃ |
|
光学均匀性 |
△n=10-6/cm |
△n=10-6/cm |
△n=10-6/cm |
△n=5*10-5/cm |
|
莫氏硬度 |
4.5
|
5 |
6 |
5 |
|
密度 |
3.85g/cm³
|
3.01g/cm³
|
2.47g/cm³
|
4.64g/cm³
|
|
热导系数 |
ˆC,0.012W/m/k ‖C,0.016W/m/k
|
0.03 W/m/k
|
0.035 W/m/k
|
0.046 W/m/k
|
|
二倍频波长范围 |
205-1750nm |
1000-2000nm |
800-2000nm |
1100-3000nm |
|
吸收系数 |
<0.1%/cm@1064nm |
<1%/cm@1064nm and 532nm |
<=1%/cm@1064nm |
<0.1%/cm@1064nm |
|
非线性光学 系数 |
d21=2.2pm/V d31=0.08pm/V d22=2.2pm/V |
d31=1.95pm/V d32=3.90pm/V d33=15.3pm/V d24=3.90pm/V d15=1.95pm/V
|
d21=0.67pm/V d22=0.04pm/V d23=0.85pm/V d34=0.85pm/V d16=0.67pm/V
|
d21=d22=d16=2.6pm/V d31=d32=d24=4.6pm/V d33=25.6 pm/V |
|
损伤阀值@1064nm |
12.9J/cm² 9.9GW/ cm² |
6.0J/cm² 4.6GW/ cm² |
24.6J/cm² 18.9GW/ cm² |
200GW/ cm² |
|
折射率@1064nm@532nm |
Ne=1.5425 No=1.6551 Ne=1.5555 No=1.6749
|
Nx=1.73991 Ny=1.74802 Nz=1.82956 Nx=1.77903 Ny=1.79002 Nz=1.88628
|
Nx=1.56447 Ny=1.59050 Nz=1.60538 Nx=1.57842 Ny=1.60650 Nz=1.62154 |
Ne=2.23216 No=2.15600 Ne=2.32309 No=2.23415
|
标准规格和功能
|
NLO Crystal |
BBO |
KTP |
LBO |
LiNbO3 |
|
|
角度公差 |
△θ<+/-0.5°；△ø<+/-0.5 |
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|
尺寸公差 |
(w+/-0.1mm)*(H+/-0.1mm)*(L+0.2mm/-0.1mm) |
(w+/-0.1mm)*(H+/-0.1mm)*(L+0.2mm/-0.1mm) |
(w+/-0.1mm)*(H+/-0.2mm)*(L+0.2mm/-0.2mm) |
(w+/-0.1mm)*(H+/-0.2mm)*(L+0.2mm/-0.2mm) |
|
|
面形 |
<λ/8@633nm
|
<λ/8@633nm
|
<λ/4@632.8nm
|
<λ/8@633nm
|
|
|
光洁度 |
Better than 10/5 Scratch /Dig per MIL-O-13830A |
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|
平行度 |
<20 arc seconds |
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|
垂直度 |
<5 arc minutes
|
<5 arc minutes
|
<30 arc minutes
|
<5 arc minutes
|
|
|
透过波前 |
<λ/8@633nm
|
<λ/8@633nm
|
<λ/4@632nm
|
<λ/8@633nm
|
|
|
通光口径 |
>90% Central Area
|
>90% Central Area
|
>80% Central Area
|
>90% Central Area
|
|
|
孔径 |
1*1-12*12mm |
1*1-10*10mm |
2-10mm |
1-50mm |
|
|
长度 |
0.02-25mm |
0.05-20mm |
0.3-20mm |
0.3-20mm |
|
|
相匹配类型 |
TypeⅠor TypeⅡ |
TypeⅡ |
TypeⅠor TypeⅡ |
TypeⅠor TypeⅡ |
|
|
端面形式 |
Flat or Brewster or Specified |
Flat or Brewster or Specified |
Flat,Spherical,Parallel and Wedged |
Flat,Spherical,Parallel and Wedged |
|
|
典型镀膜 |
Antireflective coating
|
Antireflective coating Highreflective coating |
Antireflective coating
|
Antireflective coating
|
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