Since 2012 together with Scientific Research Company "Carat” we arranged film coating on TeO2 crystals. Equipment by "TORR International" (USA) can used for coating with thermal sputtering as well as magnetron sputtering and electron-beam sputtering.
Below you can find samples of AR coating on TeO2 crystal.
Multilayer AR V-coating for one wavelength. R<0.2%
Multilayer AR coating for wide wavelength ranges. R<1% (400-680 nm)
Bounded electrical gold electrodes.