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

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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