Single Layer MgF2 Antireflective coating
MgF2 is probably the most widely used thin film material for optical coatings. It is applicable to the substrates with the
refractive index from 1.45 to2.4.
Multilayer Antireflective Coatings
VAR coatings have the lowest reflectivity in a narrow wavelength band; min. reflection can be less than 0.1%. VAR are
used to target a single wavelength. When selecting a suitable multilayer anti-reflection coating, the center wavelength and
damage threshold must be given special attention.
Multilayer Broadband Antireflective Coating
Multilayer Broadband Antireflective coating provides higher transmission for a wide band width. It is ideal for wide
wavelength range lasers. Its performance is sensitive to the change of incident angle.
Dual Wavelength Band Antireflective Coatings
DWBAR coatings are designed to reduce the reflectance at two different wavelengths range. It is often used in frequency
doubling laser system for output.