| YVO4 crystals Specification or based on clients' requirements | |
| Diameter: | max.25mm |
| Length: | max.30mm |
| Surface Quality: | 20-10 |
| Optical Deviation: | <1 arc min |
| Optical Axis Orientation: | +/-0.2° |
| Flatness: | < λ/8 @633nm |
| Wave Front: | < λ/8 @633nm |
| Coating: | According to custmer request |
| Physical Properties: | |
| Transparency Range | 400~5000nm |
| Crystal Symmetry | Zircon tetragonal, space group D4h |
| Crystal Cell | A=b=7.12°, c=6.29° |
| Density | 4.22g/cm2 |
| Hygroscopic Susceptibility | Non-hygroscopic |
| Mohs Hardness | 5 glass like |
| Thermal Optical Coefficient | Dna/dT=8.5×10-6/K; dnc/dT=3.0×10-6/K |
| Thermal Conductivity Coefficient | ||C: 5.23 w/m/k; ⊥C:5.10w/m/k |
| Crystal Class | Positive uniaxial with no=na=nb, ne=nc |
| Refractive Indices,Birefringence( Dn=ne-no) and Walk-Off Angle at 45 deg(ρ) |
no=1.9929,ne=2.2154,Dn=0.2225,ρ=6.04°,at 630nm
no=1.9500,ne=2.1554,Dn=0.2054,ρ=5.72°,at 1300nm no=1.9447,ne=2.1486,Dn=0.2039,ρ=5.69°,at 1550nm |
| Sellmeier Equation (λin μm) |
no2=3.77834+0.069736/(λ2-0.04724)-0.0108133λ2
ne2=4.5905+0.110534/(λ2-0.04813)-0.0122676λ2 |
Optical Lens Design