Description: Yttrium orthovanadate (YVO4) is a positive uniaxial crystal grown with Czochralski method. It has a wide transparency range and larger birefringence, which make it widely used in many ap..
Description:
Transparency 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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Dna/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, birefringence (Dn=ne-no) and walk-off angle at 45º(ρ)
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No=1.9929,ne=2.2154,Dn=0.2225,ρ=6.04º,@ 630nm
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No=1.9500,ne=2.1554,Dn=0.2054,ρ=5.72º,@ 1300nm
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No=1.9447,ne=2.1486,Dn=0.2039,ρ=5.69º,@ 1550nm
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Sellmeier equation (λ in μm)
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no2=3.77834+0.069736/(λ2-0.04724)-0.0108133λ2ne2=24.5905+0.110534/(λ2-0.04813)-0.0122676λ2
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Diameter
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max. 25mm
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Length
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max. 30mm
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Surface quality
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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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+/-0.5º
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Flatness
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λ/4 @633nm
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Transmission wavefront distortion
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<λ/2 @633nm
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Coating
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upon customer's request
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