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Coatings on metal substrates

Overview

Many diamond-turned metals have very high infrared reflectivity and corresponding low absorption. But, with the restriction of the optical constants of the metal material, the reflectivity couldn’t be large enough. So the reflectivity of the metal surface must be improved by depositing multi-layer dielectric films. Dielectric coatings can reduce absorption, increase the laser damage threshold, and improve surface durability. Metal reflectors with high reflectivity resulting from high quality dielectric coatings and good thermal conductivity could improve the resistance to laser irradiation in high-power laser systems.

Features

IBS coatings are available on Nickel, Aluminum, Copper, Stainless steel and other metal substrates.

High reflectance of >99% for diamond turned components in wide-angle range.

Coated elements have an excellent surface quality of 10/5.

Design Example

IBS coating on diamond turned Aluminum substrate

HRa>99.9% @ 1030-1080 nm, AOI=22.5-50°

Press the right arrow to see the spectrum at 50° incidence.

IBS coating on diamond turned Aluminum substrate

HRa>99.9% @ 1030-1080 nm, AOI=22.5-50°

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