Rutile ( TiO2) single crystal is one of the most suitable materials for spectral prisms and polarizing devices such as optical isolators and beam displacers because it has a large birefringence with a high refractive index. Compared to YVO4, TiO2 crystal is more stable chemically and physically. Our high quality rutile single crystal boule and polished components have been widely used for optical isolators and special prisms.
Typical Properties
Crystal Structure
Tetragonal •a = 4.5936 Å, •c = 2.9582 Å,
Growth Method
Floating Zone
Melting Point
1840 oC
Density
4.26 g/cm3
Hardness
Mohs 7
Specific Heat capacity
0.17 ( 25 oC) Cal. / (g. Deg)
Linear expansion Coefficient
•a : 7.14 x 10-6 •c : 9.19 x 10-6
Refractive Index
n0 = 2.47ne = 2.73atl = 1.3 mm
Transmittance
0.5 - 4.5 mm
Thermal optical Coefficient
dh/dT:a: -0.72 x 10-6/Kc: -0.42 x 10-6/K
Crystal boule dimension
~ 25 mm dia x 35 mm length ( conical )
Typical polished components
2.6 x 2.6 x 10 mm, 4 x 4 x 10 mm, 10 x 10 x 0.5 mm or any custom size•Dimension: +/- 0.02 mm •Flatness: < l/10 •Roughness: 5 - 10 Å •Parallelism: < 15 " •Perpendicularity: < 15 "
Please click link below to order different orientation
Using Plasma clean substrate can achieve better film. Click picture below to see detail
