Essential details
MOQ:10
Shipping:Air freight, land freight, sea freight
Product Code:CRY-13
Product Introduction
Product name: Rutile Titanium Dioxide (TiO2) Substrate
Rutile is the tetragonal crystal form of titanium dioxide, and it has one of the highest refractive indices of any commercial oxide: about 2.47 ordinary and 2.73 extraordinary at 1.3 µm. That, plus a large birefringence, is why it ends up in polarisers, prisms and beam-splitting optics.
Key properties:
Refractive index is high, ultraviolet absorption is strong, chemical stability is good and electron mobility is high. Transmission runs from 0.5 to 4.5 µm. The dielectric constant is strongly anisotropic, around 180 along <001> and 90 perpendicular to it, which is worth knowing when the wafer goes into an RF or capacitive structure. Thermal expansion is moderate and the thermo-optic coefficient is negative in both directions.
Refractive index is high, ultraviolet absorption is strong, chemical stability is good and electron mobility is high. Transmission runs from 0.5 to 4.5 µm. The dielectric constant is strongly anisotropic, around 180 along <001> and 90 perpendicular to it, which is worth knowing when the wafer goes into an RF or capacitive structure. Thermal expansion is moderate and the thermo-optic coefficient is negative in both directions.
Typical use:
polarising and beam-splitting prisms, optical windows and waveplates for the visible to near infrared; photocatalysis and photoelectrochemical work including water splitting and pollutant degradation; photodiodes and laser optics; and as a white pigment grade material in coatings, plastics, paper and inks.
Fabrication and options:
Boules of Ø17×80 mm. Substrates in 5×5, 5×10 and 10×10 mm with ±0.05 mm tolerance, orientation <100>, <110>, <001> or <111> at ±0.5°, single or double side polished. For prism blanks, parallelism better than 30″, flatness better than λ/4 and surface quality 20/10 are held. Packed in a Class 100 clean bag inside a Class 1000 clean room.
Boules of Ø17×80 mm. Substrates in 5×5, 5×10 and 10×10 mm with ±0.05 mm tolerance, orientation <100>, <110>, <001> or <111> at ±0.5°, single or double side polished. For prism blanks, parallelism better than 30″, flatness better than λ/4 and surface quality 20/10 are held. Packed in a Class 100 clean bag inside a Class 1000 clean room.
Ordering:
Minimum order 10 pcs. For prism and polariser work send the prism angle and the wavelength; those two decide the cut and the coating.
Minimum order 10 pcs. For prism and polariser work send the prism angle and the wavelength; those two decide the cut and the coating.
Product Parameter:
Material | Rutile titanium dioxide, TiO2 single crystal
Crystal structure | Tetragonal
Growth method | Optical floating zone
Lattice constant | a = 4.5936 Å, c = 2.9582 Å
Density | 4.26 g/cm3
Mohs hardness | 7
Thermal capacity | 0.17 at 25 °C
Transmission range | 0.5-4.5 µm
Refractive index | no = 2.47, ne = 2.73 at λ = 1.3 µm
Dielectric constant | about 180 along <001>, about 90 perpendicular to <001>
Thermo-optic coefficient | dn/dT: a = -0.72 × 10-6 /K, c = -0.42 × 10-6 /K
Thermal expansion | a = 7.14 × 10-6 /K, c = 9.19 × 10-6 /K
Boule dimension | Ø17 × 80 mm
Orientation | <100>, <110>, <001>, <111>
Orientation tolerance | ±0.5°
Dimension | 5×5 mm, 5×10 mm, 10×10 mm
Dimension tolerance | ±0.05 mm
Prism parameters | Parallelism better than 30″, flatness better than λ/4, S/D 20/10
Polishing | Single side or double side
Packing | Class 100 clean bag, Class 1000 clean room
Minimum order | 10 pcs
Crystal structure | Tetragonal
Growth method | Optical floating zone
Lattice constant | a = 4.5936 Å, c = 2.9582 Å
Density | 4.26 g/cm3
Mohs hardness | 7
Thermal capacity | 0.17 at 25 °C
Transmission range | 0.5-4.5 µm
Refractive index | no = 2.47, ne = 2.73 at λ = 1.3 µm
Dielectric constant | about 180 along <001>, about 90 perpendicular to <001>
Thermo-optic coefficient | dn/dT: a = -0.72 × 10-6 /K, c = -0.42 × 10-6 /K
Thermal expansion | a = 7.14 × 10-6 /K, c = 9.19 × 10-6 /K
Boule dimension | Ø17 × 80 mm
Orientation | <100>, <110>, <001>, <111>
Orientation tolerance | ±0.5°
Dimension | 5×5 mm, 5×10 mm, 10×10 mm
Dimension tolerance | ±0.05 mm
Prism parameters | Parallelism better than 30″, flatness better than λ/4, S/D 20/10
Polishing | Single side or double side
Packing | Class 100 clean bag, Class 1000 clean room
Minimum order | 10 pcs
