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| Product Name: | YVO4 Crystal | Crystal Structure: | Zircon Tetragonal |
|---|---|---|---|
| Density: | 4.22g/cm3 | Mohs Hardness: | 5 |
| Hygroscopic: | Non-hygroscopic | Transparency Range: | 400-5000 Nm |
| Lattice Constants: | A=b=7.12Å; C=6.29 Å | Thermal Expansion Coefficiet: | αa=4.43x10-6/K;αc=11.37x10-6/K |
| High Light: | Undoped YVO4 Crystal,Birefringent YVO4 Crystal,Undoped Yttrium Vanadate |
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Undoped YVO4 crystal is an excellent birefringent optical crystal newly developed in recent years. It has good light transmission in a wide range of visible and near-infrared. Compared with other important birefringent crystals, YVO4 crystals are harder than CaCO3 single crystals, have better mechanical processing properties, and can be grown artificially; YVO4 crystals are also easier to grow large-high-quality crystals than TiO2 single crystal, and the price is much lower than TiO2.
These excellent characteristics make YVO4 crystal quickly become a new type of birefringent optical material, which is widely used in the optoelectronic industry. In optical fiber communication equipment, a large number of various light splitting and polarization components made of pure YVO4 crystals, such as optical isolators, circulators, optical beam splitters, and Glan series polarizers, are required. The combination of YVO4 crystals and rutile crystals can also obtain an ideal temperature compensation effect, which greatly improves the temperature stability of the optical communication system.
| Transparency Range | 400-5000nm |
| Crystal Symmetry | Zircon Tetragonal, space group D4h |
| Crystal Cell | a=b=7.12Å,c=6.29Å |
| Density | 4.22g/cm3 |
| Mohs Hardness | 5,glass-like |
| Hygroscopic Susceptibility | Non-hygroscopic |
| Thermal Expansion Coefficient | αa = 4.43×10-6/K；αc = 11.37 ×10-6/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 = 8.5×10-6/K；dnc/dT = 3.0×10-6/K |
| Refractive Indices, Birefringence (Δn = ne- no) and Walk-off Angle @ 45° (ρ) |
no = 1.9929, ne = 2.2154, Δn = 0.2225, ρ= 6.04° at 630nm no = 1.9500, ne = 2.1554, Δn = 0.2054, ρ= 5.72° at 1300nm no = 1.9447, ne = 2.1486, Δn = 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 |
| Dimension tolerance | ±0.05mm |
| Optical axis orientation | ±0.2° |
| Parallelism | ＜15″ |
| Perpendicularity | ＜10′ |
| Flatness | λ/10 @ 633nm |
| Surface Quality | 20/10 |
| AR Coating | upon customer's Specification |
Contact Person: Chen Dongdong
Tel: +86 18326013523
Fax: 86-551-63840588
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