Titanium dioxide (TiO2) is well-known for having a very high index of refraction, and this has led to its common use in thin-film optics. Typically, TiO2 is one component of alternating layers of high and low refractive index materials that by the principle of optical interference tailor the thin-film optic's spectral reflectance profile. This technique can be used to make optical filters, reflectors, and antireflection (AR) coatings for eyeglasses and other lenses. It is common to find titanium dioxide paired with silicon dioxide (SiO2) as the low refractive index material. TiO2's index can vary due to density variations caused by different deposition processes. These conditions can produce different forms of titania (rutile, amorphous, anatase). In its particulate form titanium dioxide is bright white, highly scattering, and ideal for use as a pigment. It is present in many paints along with most sunscreens and toothpastes.

对于典型的样品 - TiO2 - Amorphous - 波长在 632.8 nm 下的折射率和消光系数为2.49258及0。 以下是包含完整折射率和消光系数的文件。 如果文件无法下载，请点击“请求”（Request）以索取该专有文件。

Refractive Index Reference - Various sources

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