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:

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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