Description of Rutile Titanium Dioxide Crystal Substrate
Optical grade rutile titanium dioxide (TiO2) single crystal substrate has large birefringence, large refractive index, which is A good material for the spectral prism and polarizing device (such as optical isolators and the beam splitter). Compared with YVO4, the TiO2 crystals have better physical and chemical stability.
Specifications of Rutile Titanium Dioxide Crystal Substrate
Major capability parameter
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Crystal structure
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Tetragonal system
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Lattice constant
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a=4.5936Å c=2.9582 Å
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Growth method
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Flame method, Floating zone method
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Density
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4.26(g/cm3)
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Melting point
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1870°C
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Heat capacity
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0.17(25°C)
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Transmission
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0.5~4.5um
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Refractive index
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no=2.47 ne=2.73 at λ=1.3um
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Thermo optic coefficient
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dη/dT:a:-0.72×106/k c:-0.42×10-6/k
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Linear expansion coefficient
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a:7.14×106 c:9.19×106
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Hardness
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7(mohs)
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Crystal rod
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Φ25mm×90mm
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Orientation
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<001>, <110>, <100>, <111>
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Standard Size
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5×5×10mm, 5×10×10mm, 10×10×0.5mm, dia 20mm ×0.5mm
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Polishing
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Single or double side polished
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Tolerance and Optical quality
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Dimension tolerance: +0.1 mm, Orientation tolerance: ±0.5 o
Parallelism: <30", Flatness: <λ/4, Verticality: <30",
Surface quality: 10/5
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Applications of Rutile Titanium Dioxide Crystal Substrate
- Spectral prism
- Polarizing device (such as optical isolators and the beam splitter)