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            • 釩酸釔(YVO4)
             
            釩酸釔(YVO4)

             


            釩酸釔(YVO4)單晶是一種具有優良物理光學性能的雙折射晶體材料。該晶體透光范圍寬,透過率高、雙折射系數大、并易于加工。因此,YVO4晶體被廣泛應用于光纖通信領域,是光通信無源器件如光隔離器、旋光器、延遲器、偏振器中的關鍵材料。

            Specifications:

            Diameter:
            Max 25m
            Length:
            Max 35mm
            Surface Quality:
            better than 20/10 scratch/dig
            Beam Deviation:
            < 3 arc min
            Optical Axis Orientation:
            +/-0.2deg
            Flatness:
            <λ/4 @632.8nm
            Wavefront Distortion:
            <λ/2 @632.8nm
            Coating:
            Coating upon Request

            Properties:
             

            Transmitting range
            400~5000nm
            Crystal Symmetry
            Zircon tetragonal, space group D4h
            Crystal Cell
            a=b=7.12 °, c=6.29 °
            Density
            4.22 g/cm2
            Hygroscopic Susceptibility
            Non-hygroscopic
            Mohs Hardness
            5 glass like
            Thermal Optical Coefficient
            Δna /dT=8.5x10-6 /K; dnc /dT=3.0x10-6 /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,
            no=1.9929, ne=2.2154, △n=0.2225, ρ=6.04°, at 630nm
            Birefringence(△n=ne-no)
            no=1.9500, ne=2.1554, △n=0.2054, ρ=5.72°, at 1300nm
            and Walk-Off Angle at 45 deg(ρ)
            no=1.9447, ne=2.1486, Dn=0.2039, ρ=5.69°, at 1550nm
            Sellmeier Equation ( l in μm)
            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.


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