Yttrium Vanadate (YVO₄)
Yttrium vanadate (YVO₄) is a positive uniaxial crystal grown by the Czochralski method. Its good mechanical and physical properties, broad transmission range and large birefringence make it ideal for optical polarization components and an excellent synthetic alternative to calcite and rutile. Applications include fiber isolators and circulators, guangdong displacers (source term), Glan polarizers and other polarization optics.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Crystal Structure | Tetragonal Crystal System, Space Group D₄ₕ-^(Ⅰ4)/amd |
| Unit Cell Parameters | a=b=7.19nm，c=6.29nm |
| Laser Wavelength | 1064nm，1342nm |
| Mohs Hardness | 5 (Close to Glass) |
| Density | 4.22g/cm³ |
| Transmission Range | Good Transmittance in the 4-5000nm Range |
| Thermo-Optic Coefficient dn₀/dT | dn₀/dT=8.5x10⁻⁶/℃ |
| Thermo-Optic Coefficient dnₑ/dT | dnₑ/dT=2x10⁻⁶/℃ |
| Coefficient of Thermal Expansion aₐ [300K] | aₐ=4.43x10⁻⁶/K |
| Coefficient of Thermal Expansion a_c [300K] | a_c =11.37x10⁻⁶/K |
| Rubidium Concentration | 0.1% to 3% |
| Wavefront Distortion | <1/8 λ |
| Cross-Section Dimensional Tolerance | +0.05mm/-0.05mm |
| Length Tolerance | +0.5mm/-0.5mm |
| Chamfer [45°] | 0.1mm@45° |
| Flatness [633mm] | <1/10 λ at 633mm |
| Parallelism | <10arc second |
| Perpendicularity | <5 are min |
Applications
Key Features
Datasheet
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