Overview: The Yttrium Orthovanadate (YVO4) is a positive uniaxial crystal grown with Czochralski method. It
has good mechanical and physical properties and is ideal for
optical polarizing components due to its wide transparency range
and large birefringence. It is an excellent synthetic substitute
for Calcite (CaCO3) and Rutile (TiO2) crystals in fiber optical
applications such as isolators, circulators, beam displacers, Glan
polarizers and other polarizing optics. General Specifications Of YVO4: | Dimension Tolerance | (W±0.1mm) x (H±0.1mm) x (L±0.2mm) | | Optical Axis Orientation | ±0.5° | | Surface Quality | Better than 20/10 Scratch and Dig | | Clear Aperture | >90% Central | | Surface Flatness | λ/4@633 nm | | Parallelism | <15 arc seconds | | Perpendicularity | <10 arc minutes | | AR Coating | Upon Request |
Physical and Optical Properties of YVO4: | Crystal Structure | Zircon tetragonal, space group D4h | | Lattice Constants | a=b=7.12, c=6.29 | | Density | 4.22 g/cm3 | | Mohs Hardness | 5 glass like | | Hygroscopic Susceptibility | No | | Transparency Range | 500nm ~ 4000nm | | Thermal Conductivity Coefficient | ⊥C: 5.10w/m/K | | ||C: 5.23 w/m/K | | Thermal Optical Coefficients | dna/dT=8.5x10-6/K | | dnc/dT=3.0x10-6/K | | Thermal Expansion Coefficient | aa=4.43x10-6/K | | ac=4.43x10-6/K | | Crystal Class | Positive uniaxial with no=na=nb, ne=nc | Refractive Index
Birefringence (dn=ne-no)
Walk-Off Angle at 45 deg (p) | no=1.9929, ne=2.2154, dn=0.2225, p=6.04°, @630nm | | no=1.9500, ne=2.1554, dn=0.2054, p=5.72°, @1300nm | | no=1.9447, ne=2.1486, dn=0.2039, p=5.69°, @1550nm | | Sellmeier Equations (λin um) | no2=3.77834+0.069736/(λ2 - 0.04724) - 0.0108133λ2 | | ne2=4.59905+0.110534/(λ2 - 0.04813) - 0.0122676λ2 |
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