| Crystal structure |
Orthorhombic |
Cell Parameters |
a = 12.96 Å; b =10.56 Å;
c =6.49 Å |
| Mohs hardness |
About 5 |
Density |
3.6 g/cm3 |
| Melting Point |
About 1000˚C |
Thermal Expansion Coefficients (/K) |
αx=1.01x10-5 ,
αy =1.37x10-5 ,
αz =-4..17x10-6 |
Sellmeier Equations
(λ in μm) |
nx2=2.15559+0.93307[1-(0.20994/λ)2]-0.01452λ2
ny2=2.38494+0.73603[1-(0.23891/λ)2]-0.01583λ2
nz2=2.27723+1.11030[1-(0.23454/λ)2]-0.01995λ2 |
Thermo-optical Coefficients (dλ/dT) |
-0.029nm / °C |
Electro-optic Constants (Y-cut)
(X-cut) |
r33=38.5 pm/V
r33=35 pm/V,r23=12.5pm/V, r13=10.6 pm/V |
Electrical Resistivity |
About 1011-1012ohm·cm |
Static Half Wave
Voltage at 1064nm |
4x4x20mm:1.600V
6x6x20mm:2.400V
9x9x20mm: 3.600 V |
Extinction Ratio |
>20dB@633nm |