Description
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Typical Properties of YVO4 crystal |
Crystal Structure |
Tetragonal: a = b = 7.12 Å c = 6.29 Å |
Czochralski |
|
Melt Point |
1825 oC |
Density |
4.22 g/cm3 |
Hardness |
5 ( mohs) |
Thermal Expansion |
aa= 4.43 x10-6/ oC ac= 11.37 x10-6/ oC |
Thermal Conductivity, |
A axis 5.32 W/(m.k) C axis = 5.10 W/(m.k) |
Thermal Optic Coefficient |
dh a / dT : 8.5x10-6/ oC dh c / dT : 3.0 x10-6/ oC |
|
~ 80% at 400 nm ~ 4000 nm range |
|
Refractive Index h Birefringence (Dn) and walk-off angle at 45° (r) |
h o= 1.9929 h e= 2.2154 Dh = 0.2225 r=6.04o at l 0.63 mm h o= 1.9500 h e= 2.1554 Dh = 0.2054 r=5.72o at l 1.30 mm h o= 1.9447 h e= 2.1486 Dh = 0.2039 r=5.69o at l 1.55 mm |
Sellmeier Equation ( l in mm ) | |
ho2 = 3.77834 + 0.069736/(l2 –0.04724) – 0.0108133 ´ l2
he2 = 4.59905 + 0.110534/(l2 –0.04813) – 0.0122676 ´ l2
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Standard Products and Specs | |
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As - grown boules <100 > or <001> ori.± 0.5o |
20 mm diameter x up to 20 mm length ( We don't suggest you purchase boules unless it is necessary because of the difficulty in quality verification at this stage ) |
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As-cut blocks q=0 or 45o, f=0 or 45o |
3.2 x3.2 x 10.3 mm 4.2 x 4.2 x 10.3 mm ( or any size available from crystal boule ) |
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Optically polished parts q=0 or 45o, f=0 or 45o 2 sides polished |
Dimension Tolerance : ± 0.05 mm Orientation Tolerance : ± 0.5 o Tolerance Parallelism : < 15" for any size upon customer request Surface Roughness : Epi polished (Ra) < 5A |
AR coating: |
R < 0.25% @1550 nm ( available upon request ) |