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The yttrium orthovanadate (YVO4), a kind of crystal preferably grown with Czochralski method has good mechanical and physical properties. It has good temperature stability and physical and mechanical properties. It is ideal for optical polarizing components because of its wide transparency range and large birefringence. It is an excellent synthetic substitute for Calcite (CaCO3) and Rutile (TiO2) crystals in many applications including fiber optic isolators and circulators, beam displacers, Glan polarizers and other polarizing optics, etc.
Main properties of YVO4 crystal:
| High transmittance from 0.4 to 5 μm | |
| crystal Cell: | a=b=7.12 Å;c=6.29 Å |
| Density: | 4.22 g/cm3 |
| Mohs Hardness: | 5, glass-like |
| Thermal Expansion Coefficiet: | αa=4.43x10-6/K;αc=11.37x10-6/K |
| Thermal Conductivity Coefficient: | //C:5.23 W/m/K;⊥C:5.10 W/m/K |
| Crystal Class: | Positive uniaxial with no=na=nb,ne=nc |
| Thermal Optical Coefficient: | Dna/dT=8.5x10-6/K;dnc/dT=3.0x10-6/K |
| Refractive Indices, Birefringence (△n=ne-no) and Walk-off Angle at 45°(ρ): | no=1.9929,ne=2.2154,△n=0.2225,ρ=6.04° at 630nm no=1.9500,ne=2.1554,△n=0.2054,ρ=5.72° at 1300nm no=1.9447,ne=2.1486,△n=0.2039,ρ=5.69° at 1550nm |
| Sellmeier Equation (λ in μm): | no2=3.77834+0.069736/(λ2-0.04724)-0.0108133λ2 ne2=4.59905+0.110534/(λ2-0.04813)-0.0122676λ2 |
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