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- 钒酸钇(YVO4)
钒酸钇(YVO4)
钒酸钇(YVO4)单晶是一种具有优良物理光学性能的双折射晶体材料。该晶体透光范围宽，透过率高、双折射系数大、并易于加工。因此，YVO4晶体被广泛应用于光纤通信领域，是光通信无源器件如光隔离器、旋光器、延迟器、偏振器中的关键材料。
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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Coating 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 ( l 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 |
Note: Kinds of sizes, cut angle, coating are available upon request.
