Anti-Reflective Coatings

Single Layer MgF2 Antireflective Coatings ( Type : SAR)

Magnesium fluoride is probably the most widely used thin film material for optical coatings. Its performance, though not outstanding, represents a significant improvement over an uncoated surface.

Examples:

R <1.5%@540nm
R <2%@400-700nm

R < 2.0%@540nm
R < 3.0%@400-700nm

Multilayer Single Wavelength Antireflective Coatings ( Type: VAR)

Such antireflective coatings can reach the lowest reflectivity at a central wavelength. It is often applied to single laser wavelength or multiple, closely-spaced wavelength systems to guarantee the lowest loss of reflection. We can provide such coatings on our optical components with central wavelengths from 250nm to 2200nm. When selecting a suitable multilayer antireflective coating, the center wavelength, angle of incidence and damage threshold must also be considered

Examples:

R <0.25%@1064nm

R <0.5%@1064nm

Multilayer Broadband Antireflectance Coatings (Type: WAR)

Different from single layer MgF2 Broadband antireflective coating, the multilayer Broadband antireflective coating can achieve higher transmission for a specified broadband spectrum. Therefore, it is the ideal for a wide range of multi-wavelength laser and white light applications. Please notify us of the wavelength range and reflectivity of the coating required, as well as the angle of incidence.

Examples:

R<0.6%@450~650nm

R<1.0%@450~650nm

Dual Wavelength Band Antireflective Coatings( Type: DAR)
This coating allows two central wavelengths of radiation to pass through the substrate with high transmission. This coating is often used in frequency doubling systems or the other muti-laser output systems, e.g. Nd: YVO4 laser (1064nm) and its second harmonic generation (532nm) green laser.

Examples:

R <0.25%@1064nm
R <0.5%@532nm

R <0.5%@1064nm
R <0.8%@532nm