FW-YVO4-010
Yttrium Orthovanadate (YVO4) optical grade crystals
Key Specifications
| Chemical formula | YVO4 |
| Transparency (um) | 0.4 – 5.0 |
| Melting Point (C) | 1150 |
| Density (g/cm3) | 4.22 |
| Moh’s Hardness | 5 |
Yttrium vanadate (YVO4) single crystal is a birefringent crystal material with excellent physical optical properties. The crystal has a wide range of light transmission, high transmittance, large birefringence coefficient and is easy to process. Therefore, YVO4 crystal is widely used in the field of optical fiber communication and is the key material in optical communication passive devices such as optical isolators, polarimeters, retarders, polarizer.
General Specifications of YVO4:
| Light transmission range | High transmittance:0.4-5 μm |
| Crystal symmetry | Quartz zircon, Space Group D4h |
| Lattice parameters | a=b=7.12A;c=6.29A |
| Density | 4.22 g/cm3 |
| Mohs Hardness | 5, Similar as Glass |
| Deliquescence | Not deliquescent |
| Thermal expansion coefficient | αa=4.43×10-6/K;αc=11.37×10-6/K |
| Thermal conductivity | //C:5.23 W/m/K;⊥C:5.10 W/m/K |
| Crystal system | Uniaxial crystal: no=na=nb,ne=nc |
| Thermal coefficient | dna/dT=8.5x10-6/K;dnc/dT=3.0×10-6/K |
| Thermal coefficient，Birefringence coefficient(△n=ne-no)，Discrete angle:45°(ρ): | no=1.9929,ne=2.2154,△n=0.2225,ρ=6.04° at 0.63mm no=1.9500,ne=2.1554,△n=0.2054,ρ=5.72° at 1.30mm no=1.9447,ne=2.1486,△n=0.2039,ρ=5.69° at 1.55mm |
| Sellmeier equation(λ is expressed 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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| Melting Point (C) | 1650 |
| Moh's Hardness | 5.5-6 |
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