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Optical Surfaces Ensures Flatness of Mirrors by Mitigating Uncertainties Associated with Flatness Coating

Optical Surfaces is a leading supplier of large, high precision reference flats and mirrors (coated flats) to research establishments, high power laser facilities and organisations worldwide.

For high power laser applications - mirrors are typically produced by treating a flat substrate with several layers of ultra hard dielectric coating. Unfortunately these hard dielectric coatings cause a surface which is perfectly flat before coating to pull after coating and to induce that surface to become more convex. Whilst each type of coating behaves uniquely depending on coating design, type of material, aspect ratio of the blank and internal stresses, Optical Surfaces has developed expertise to mitigate the uncertainties associated with the coating to ensure flatness, and hence the performance of the mirror.

Benefiting from a unique thermally stable manufacturing environment, and working with high-stability materials such as fused Quartz and Zerodur, Optical Surfaces is able to routinely achieve a surface accuracy of better than lambda/10 p.v. and surface roughness of less than 1nm on flats and mirrors (coated flats) up to 600mm in diameter. In addition to circular flats and mirrors (coated flats), Optical Surfaces is experienced in producing flats and mirrors in other shapes, light-weighted mirrors and supplying high precision mounts.

All flats and mirrors (coated flats) from Optical Surfaces Ltd. come with full quality testing assurance. For further information please visit www.optisurf.com/index.php/products/flats-and-windows/flats or contact Optical Surfaces on +44-208-668-6126 / [email protected]

Drawing upon over 50 years in this field, Optical Surfaces Ltd has established itself as one of the world's leading suppliers of high precision flats and mirrors (coated flats) for ground breaking applications by leading research institutes and organisations worldwide. Optical Surfaces ISO 9001-2008 approved manufacturing facility provides the flexible resources to supply from single specialist requirements to OEM quantities.

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