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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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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.


YVO4 crystals Specification or based on clients' requirements

Diameter:

max.25mm

Length:

max.30mm

Surface Quality:

20-10

Optical Deviation:

<1 arc min

Optical Axis Orientation:

+/-0.2°

Flatness:

< λ/8 @633nm

Wave Front:

< λ/8 @633nm

Coating:

According to custmer request

Physical Properties:

Transparency Range

400~5000nm

Crystal Symmetry

Zircon tetragonal, space group D4h

Crystal Cell

A=b=7.12°, c=6.29°

Density

4.22g/cm2

Hygroscopic Susceptibility

Non-hygroscopic

Mohs Hardness

5 glass like

Thermal Optical Coefficient

Dna/dT=8.5×10-6/K; dnc/dT=3.0×10-6/K

Thermal Conductivity Coefficient

||C: 5.23 w/m/k; ⊥C:5.10w/m/k

Crystal Class

Positive uniaxial with no=na=nb, ne=nc

Refractive Indices,Birefringence( Dn=ne-no) and Walk-Off Angle at 45 deg(ρ)

no=1.9929,ne=2.2154,Dn=0.2225,ρ=6.04°,at 630nm
no=1.9500,ne=2.1554,Dn=0.2054,ρ=5.72°,at 1300nm
no=1.9447,ne=2.1486,Dn=0.2039,ρ=5.69°,at 1550nm

Sellmeier Equation (λin μm)

no2=3.77834+0.069736/(λ2-0.04724)-0.0108133λ2
ne2=4.5905+0.110534/(λ2-0.04813)-0.0122676λ2