Single Layer MgF2 Antireflective Coatings (Pat No. : SAR)
Magnesium fluoride is probably the most widely used thin film material for optical coatings. Its performance is not outstanding but it dos represents a significant improvement over an uncoated surface.
Multilayer Antireflective Coatings(VAR)
Such antireflective coatings can reaches the lowest reflectivity at a center wavelength.It is often applied to single laser wavelength or multiple, closely-spaced wavelength system to guarantee the lowest loss for center wavelength. Phosctech can provide such coating with center wavelength from 250nm to 2200nm.When selecting a suitable multilayer antireflective coating, the center wavelength and damage threshold must be considered.
Multilayer Broadband Antireflective Coatings(WAR)
Different from single result in layer MgF2 broadband antireflective coating, the multilayer Broadband antireflective coating can higher transmission access a broad spectrum. Therefore, it is the ideal for a wide range of multi-wavelength laser and white light application. Please notice that the wavelength range and reflectivity of the coating changes according to the angle of the incident beam.
Dual Wavelength Band Antireflective Coatings(DAR)
This coating is designed to provide very high transmission at two different wavelength. This coating is often used in frequency doubling systems or the other multi-laser output systems, such as the Nd: YVO4 laser (1064nm) and its second harmonic generation (532nm) green laser.
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Antireflective Coatings