TiO2

Titanium dioxide (TiO2) crystal has large birefringence and refractive index, is an ideal material for spectral prisms and polarization devices (e. g., optical isolators and beam splitter). TiO2 crystal is attracting attention also as a substrate for epitaxial growth.

Uses/Applications

Spectral prisms, polarization and substrate.

Features/Benefits

Large birefringence and refractive index

  • Crystal Structure

    Tetragonal

    Growth Method

    Optical floating zone method

    Lattice Constant

    a=4.5936Å    c=2.9582 Å

    Density

    4.26g/cm3

    Mohs Hardness

    7mohs

    Heat Capacity

    0.17 (KJ/kg)25℃

    Transmission Wavelength

    0.54.5um

    Refractive Index

    no=2.47 ne=2.73 at λ=1.3μm

    Dielectric Constant

    ~180 //<001>;   ~90 <001>

    Thermo-Optical coefficient

    dη/dTa-0.72×10-6/k ; c-0.42×10-6/k

    Thermal Expansion

    a7.14×10-6 /Kc9.19×10-6/K

    Boule Dimension

    Φ17×80mm

    Orientation

    <100>;<110>;<001>;<111>

    Orientation Tolerance

    ±0.5°

    Dimension

    5×5mm5×10mm10×10mm

    Dimension Tolerance

    ±0.05mm

    Processing Parameters for Prisms

    Parallelism

    <30″

    Flatness

    <λ/4

    S/D

    20/10

    Polishing

    One side or two sides

    Package

    Class 100 clean bag, Class 1000 super clean room


  • Dimension

    5×5mm、5×10mm、10×10mm


    Dimension Tolerance

    ±0.05mm