YVO4 crystal
Yttrium Vanadate (YVO4) crystals are positive uniaxial crystals grown using the Czochralski method. They have good mechanical and physical properties and are ideal for optical polarizing components because of their wide transparency range and large birefringence. They are an excellent synthetic substitute for Calcite (CaCO3) and rutile (TiO2) in many applications including fiber optic isolators and circulators, beam displacer, Glan polarizer and other polarizing optics.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Diameter | max.25 |
| Length | max.30 |
| Surface Quality | 20/10 |
| Optical Deviation | <1 arc min |
| Optical Axis Orientation | +/-0.2 |
| Flatness [633nm] | <λ/8 |
| Wave Front [633nm] | <λ/8 |
| Coating | According to custmer request |
| Transparency Range | 400~5000 nm |
| Crystal Symmetry | Zircon tetragonal, space group D4h |
| Crystal Cell | A=b=7.12°, c=6.29° |
| Density | 4.22 g/cm² |
| Hygroscopic Susceptibility | Non-hygroscopic |
| Mohs Hardness | 5 glass like |
| Thermal Optical Coefficient Dna/dT | 8.5×10⁻⁶ |
| Thermal Optical Coefficient dnc/dT | 3.0×10⁻⁶ |
| Thermal Conductivity Coefficient [||C] | 5.23 w/m/k |
| Thermal Conductivity Coefficient [⊥C] | 5.10 w/m/k |
| Crystal Class | Positive uniaxial with no=na=nb, ne=nc |
| Refractive Indices nₒ [630nm] | 1.9929 |
| Refractive Indices nₑ [630nm] | 2.2154 |
| Birefringence Dn [630nm；Dn=nₑ-nₒ] | 0.2225 |
| Walk-Off Angle ρ [630nm；at 45 deg] | 6.04 ° |
| Refractive Indices nₒ [1300nm] | 1.9500 |
| Refractive Indices nₑ [1300nm] | 2.1554 |
| Birefringence Dn [1300nm；Dn=nₑ-nₒ] | 0.2054 |
| Walk-Off Angle ρ [1300nm；at 45 deg] | 5.72 ° |
| Refractive Indices nₒ [1550nm] | 1.9447 |
| Refractive Indices nₑ [1550nm] | 2.1486 |
| Birefringence Dn [1550nm；Dn=nₑ-nₒ] | 0.2039 |
| Walk-Off Angle ρ [1550nm；at 45 deg] | 5.69 ° |
| Sellmeier Equation nₒ² [λ in μm] | nₒ²=3.77834+0.069736/(λ²-0.04724)-0.0108133λ² |
| Sellmeier Equation nₑ² [λ in μm] | nₑ²=4.5905+0.110534/(λ²-0.04813)-0.0122676λ² |
Datasheet
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