Physical and Optical Properties
| Crystal Structure | Trigonal, Space Group R3c | Orthorhombic, Point Group mm² | Orthorhombic, Point Group mm² | Trigonal, Space Group R3c |
| Transparency Range | 189-3500nm | 350-4500nm | 160-2600nm | 420-5200nm |
| Cell Parameters |
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 |
| Melting Point | 1095+/-5℃ | 1172℃ Incongruent | 834℃ | 1255+/-5℃ |
| Curie Point | 925+/-5℃ | 936℃ | 5 | 1140+/-5℃ |
| Optical Homogeneity | △n=10-6/cm | △n=10-6/cm | △n=10-6/cm | △n=5*10-5/cm |
| Mohs Hardness | 4.5 | 5 | 6 | 5 |
| Density | 3.85g/cm³ | 3.01g/cm³ | 2.47g/cm³ | 4.64g/cm³ |
| Thermal Conductivity |
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 |
| Phase-matchable SHG Range | 205-1750nm | 1000-2000nm | 800-2000nm | 1100-3000nm |
| Absorption Coefficient | <0.1%/cm@1064nm | <1%/cm@1064nm and 532nm | <=1%/cm@1064nm | <0.1%/cm@1064nm |
| NLO coefficients |
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/ |
d21=d22=d16=2.6pm/V d31=d32=d24=4.6pm/V d33=25.6 pm/V |
| Damage Threshold@1064nm | 12.9J/cm² 9.9GW/ cm² | 6.0J/cm² 4.6GW/ cm² | 24.6J/cm² 18.9GW/ cm² | 200GW/ cm² |
| Refractive Indices@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=1.6215 |
Ne=2.23216 No=2.15600 Ne=2.32309 No=2.23415 |
NLO CRYSTAL
Typical Specification and Capabilities
| NLO Crystal | BBO | KTP | LBO | LiNbO3 |
| Angle Tolerance | △θ<+/-0.5°；△ø<+/-0.5 | |||
| Dimension Tolerance | (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) |
| Flatness | <λ/8@633nm | <λ/8@633nm | <λ/4@632.8nm | <λ/8@633nm |
| Scratch/Dig Code | Better than 10/5 Scratch /Dig per MIL-O-13830A | |||
| Parallelism | <20 arc seconds | |||
| Perpendicularity | <5 arc minutes | <5 arc minutes | <30 arc minutes | <5 arc minutes |
| Wavefront Distortion | <λ/8@633nm | <λ/8@633nm | <λ/8@632nm | <λ/8@633nm |
| Clear Aperture | >90% Central Area | >90% Central Area | >80% Central Area | >90% Central Area |
| Aperture | 1*1-12*12mm | 1*1-10*10mm | 2-10mm | 1-50mm |
| Length | 0.02-25mm | 0.05-20mm | 0.3-20mm | 0.3-20mm |
| Phase Matching Type | TypeⅠor TypeⅡ | TypeⅡ | TypeⅠor TypeⅡ |
TypeⅠor TypeⅡ |
| End Configuration | Flat or Brewster or Specified | Flat or Brewster or Specified | Flat,Spherical,Parallel and Wedged | Flat,Spherical,Parallel and Wedged |
| Typical Coating | Antireflective coating |
Antireflective coating High reflective coating |
Antireflective coating |
Antireflective coating |
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