Yttrium Orthovanadate 35mm Birefringent YVO4 Laser Crystal
The Yttrium Orthovanadate (YVO4) is a positive uniaxial crystal grown with Czochralski method. It has good temperature stability and physical and mechanical properties. It is ideal for optical polarizing components because of its wide transparency range and large birefringence. It is an excellent synthetic substitute for Calcite (CaCO3) and Rutile (TiO2) crystals in many applications including fiber optic isolators and circulators, interleavers, beam displacers, Glan polarizers and other polarizing optics,etc
Advantages:
• Various size of bulk and finished high quality YVO4 crystals
• Large quantity YVO4 wedges and displacers used for fiber optical isolators and circulators, interleavers, in size of 1.25x1.25x0.5mm3 to 3x3x15mm3 to meet OEM customer's requirement；
• Quick delivery；
• Very competitive price；
• Strict quality control；
• Technical support
Specifications:
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Diameter:
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Max 25m
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Length:
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Max 35mm
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Surface Quality:
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better than 20/10 scratch/dig
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Beam Deviation:
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< 3 arc min
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Optical Axis Orientation:
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+/-0.2deg
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Flatness:
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<λ/4 @632.8nm
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Wavefront Distortion:
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<λ/2 @632.8nm
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Coating:
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R<0.2% @ 1550 nm or 1310nm ± 40 nm or upon request.
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Properties:
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Transmitting range
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400~5000nm
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Crystal Symmetry
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Zircon tetragonal, space group D4h
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Crystal Cell
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a=b=7.12 °, c=6.29 °
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Density
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4.22 g/cm2
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Hygroscopic Susceptibility
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Non-hygroscopic
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Mohs Hardness
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5 glass like
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Thermal Optical Coefficient
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Δna /dT=8.5x10-6 /K; dnc /dT=3.0x10-6 /K
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Thermal Conductivity Coefficient
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||C: 5.23 w/m/k; ⊥C:5.10w/m/k
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Crystal Class
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Positive uniaxial with no=na=nb, ne=nc
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Refractive Indices,
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no=1.9929, ne=2.2154, △n=0.2225, ρ=6.04°, at 630nm
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Birefringence(△n=ne-no)
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no=1.9500, ne=2.1554, △n=0.2054, ρ=5.72°, at 1300nm
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and Walk-Off Angle at 45 deg(ρ)
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no=1.9447, ne=2.1486, Dn=0.2039, ρ=5.69°, at 1550nm
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Sellmeier Equation (λ in μm)
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no2 =3.77834+0.069736/( λ2 -0.04724)-0.0108133 λ2
ne2 =4.5905+0.110534/( λ2 -0.04813)-0.0122676 λ2 |
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