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Rutile(TiO2) substrate

Rutile(TiO2) substrate

 

The main performance parameters

Product Name
Rutile(TiO2) single crystal substrate
Crystal structure
Tetragonal system
Lattice constant
a=4.5936Å    c=2.9582 Å
Growth method
Flame method, Floating zone method
Density
4.26(g/cm3)
Melting point
1870℃
Heat capacity
0.17(25℃)
Transmission
0.5~4.5um
Refractive index
no=2.47 ne=2.73 at λ=1.3um
Thermo optic coefficient
dη/dT:a:-0.72×10­6/k c:-0.42×10-6/k
Linear expansion coefficient
a:7.14×10­6 c:9.19×10­6
Hardness
7(mohs)
Maximum Crystal rod 
Φ25mm×90mm
Tolerance and Optical quality
Size  tolerance:         +0.1 mm,
Thickness tolerance: ±0.05mm
Parallelism:      <30", Flatness: <λ/4, Verticality: <30",
Surface finish: 40-20, 20-10, 10-5 or others (scratch-dig)
Packing
class-100 clean bag, class-1000 clean room

 

Standard Specification
Product Name Orientation Standard Size Thickness Polishing  
Rutile(TiO2) substrate <001> ±0.5°
<100> ±0.5°
<110> ±0.5°
<111> ±0.5°
Or other off-angle
10x10mm
10x5mm
5x5mm
φ12.7 x 0.5mm
Or others
0.1mm
0.2mm
0.5mm
1.0mm
Or others
Fine ground
Single side Epi-polished
Double side Epi-polished
Double side optical-polished

Roughness: Ra<5A(0.5nm)
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Optical grade rutile titanium dioxide (TiO2) single crystal substrate. Rutile large birefringence, large refractive index, Which is A good materials for spectral prism and polarizing device (such as optical isolators and the beam splitter). Compared with YVO4, The TiO2 crystals has a better physical and chemical stability.

 
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