A line of sapphire cover glass windows that reduce focus shift and are ideal for use as debris shields on 1064 nm cutting and welding lasers has been introduced by Laser Research Optics of Providence, Rhode Island.
Laser Research Sapphire Fiber Laser Windows are ideal for use as debris shields on high power lasers from 4 kW up and have lower bulk absorption with about 30 times higher thermal conductivity than fused silica protect-tion glasses. Featuring Mohs 9 hardness, which is second only to diamond, they have A/R coatings on both sides to provide transmission of > 99.5% @ 1.06 microns with > 80% @ 650-670 nm.
Reducing focus shift and the deterioration of beam quality, Laser Research Sapphire Fiber Laser Windows can withstand steel splatter, flash, and debris better than fused silica which extends their service life and the required lens changes. Available in 0.5” and 2.0” sizes, they have a 10-5 scratch-dig finish and 1/4 wave transmitted wavefront.
Laser Research Sapphire Fiber Laser Windows are priced according to size and quantity. Price quotations are available upon request.