ND:YAG MULTI-WAVELENGTH ANTI REFLECTION (MAR)

Nd:YAG Multi-Wavelength Anti-Reflection coatings substantially reduce surface reflectance at up to three YAG harmonic frequencies simultaneously. These all dielectric coatings are sensitive to polarization, wavelength, and angle of incidence. They are durable and highly resistant to laser damage.

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BROADBAND ANTI-REFLECTION (BAR)

Broadband Anti-Reflection coatings substantially reduce surface reflection over a broad spectral region. These coatings are less sensitive to the angle of incidence than “V” coatings, which makes them well suited for the steepy curved surfaces of high numerical aperture lenses, or for applications in which it is necessary to vary the angle of incidence.

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NARROWBAND ANTI-REFLECTION (NAR)

Narrowband Anti-Reflection coatings, often referred to as “V”coatings, substantially reduce surface reflectance at the specified center wavelength and are better suited to laser applications than single-layer AR coatings. These all dielectric, multi-layer coatings are sensitive to polarization, wavelength and angle of incidence. They are durable and highly resistant to laser damage.
Coatings for high power wavelengths use special materials that are able to withstand higher power than standard narrowband anti-reflection coatings.

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SINGLE LAYER ANTI-REFLECTION (SAR)

Single Layer Magnesium Fluoride (MgF2) is the most common anti-reflection coating. It is a hard, durable coating that reduces surface reflectance of BK7 from approximately 4% to less than 1.3% at the specified center wavelength and normal incidence. Reflection losses for higher index materials such as sapphire are less than 0.5%. This coating is widely used in commercial optical products and other less demanding applications

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