Rutile Crystals (TiO2)
ELAN offers optical elements made of high quality synthetically grown Rutile
crystals. Rutile's strong birefringence, wide transmission range and good
mechanical properties make it suitable for fabrication of polarizing cubes,
prisms and optical isolators. Boules having high optical transmission and
homogeneity are grown by unique method developed by the loffe Institute, St.
Petersburg. Typical boules have 10 - 15 mm in dia. and up to 25 mm length.
Optical elements sizes - from 2 x 2 x 1 mm to 12.7 x 12.7 x 12.7 mm. Laser grade
polish quality is available for finished elements.
Material propeties
| Chemical Formula |
TiO2 |
| Crystal Structure |
Tetragonal, 4/mmm |
| Lattice Constants, A |
a = 4.593
c = 2.958 |
| Density, g/cm3 |
4.24 - 4.28 |
| Melting point, °C |
1840 ± 10 |
| Mohs Hardness |
6.0 - 6.5 |
| Heat Capacity, cal / gK |
0.17 at 25 °C |
| Thermal Expansion Coefficient, 10-6· K-1 |
a||=
9.19
a^ = 7.14 |
| Thermal conductivity, cal / cm· S· K |
æ|| = 3×10-2
æ^= 2.1×10-2 |
| Transmission Range |
0.4 - 5 mm |
Reflection indices
| Wavelength |
no |
ne |
0.546
0.69
1.31
1.55 |
2.65
2.56
2.47
2.45 |
2.95
2.83
2.73
2.71 |
|
