| Main characteristics: |
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| Transparency Range: |
high transmittance from 0.4 to 5mm |
| Crystal Symmetry: |
Zircon Tetragonal, space group D4h |
| Crystal Cell: |
a=b=7.12 Å; c=6.29 Å |
| Density: |
4.22 g/cm3 |
| Mohs Hardness: |
5, glass-like |
| Deliquescence |
None |
| Thermal Expansion Coefficient: |
aa = 4.43 x 10-6/K; a c = 11.37 x 10-6/K |
| Thermal Conductivity Coefficient : |
//C: 5.23 W/m/K; ^ C: 5.10 W/m/K |
| Crystal Class: |
Positive uniaxial with no=na=nb, ne=nc |
| Thermal Optical Coefficient: |
dna/dT = 8.5x10-6/K; dnc/dT = 3.0x10-6/K |
| Refractive Indices, |
no = 1.9929, ne = 2.2154, D n = 0.2225, r = 6.04o at 0.63 m m |
| Birefringence (D n = ne- no) and |
no = 1.9500, ne = 2.1554, D n = 0.2054, r = 5.72o at 1.30 m m |
| Walk-off Angle at 45o (r ): |
no = 1.9447, ne = 2.1486, D n = 0.2039, r = 5.69o at 1.55 m m |
| Sellmeier Equation (l in m m): |
no2 = 3.77834 + 0.069736/(?2 - 0.04724) - 0.0108133?2 |
| ne2 = 4.59905 + 0.110534/(?2- 0.04813) - 0.0122676?2 |
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| YVO4 Beam Displacer specifications: |
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| Dimension tolerance |
?0.05 x ?0.05 x ?0.1mm |
| Optical axis orientation |
+/-0.5?/FONT> |
| Parallelism |
<15 arc sec |
| Perpendicularity |
<10 arc min |
| Flatness |
? /4 @ 632.8 nm |
| Surface Quality |
20-10 Scr-dig |
| AR-coating |
R<0.2% @ 1550 nm?40 nm |
Optical Windows
