双折射晶体
YVO4晶体
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 be..
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. Specifications:
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 |
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 |