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NIF High Reflectors

Photonics.com
Jan 2005
Alpine Research OpticsRequest Info
 
Set New Damage Threshold
BOULDER, Colo., Jan. 14 -- Highly reflective coated optics supplied by Alpine Research Optics for the National Ignition Facility (NIF) project have been independently qualified by Spica Technologies Inc. (Nashua, N.H.) to a damage resistance that is five times the industry standard. Specifically, these optics were tested and certified to withstand 47 J/cm2 at a wavelength of 1.06 microns, with a pulse duration of 3.5 nsec. ARO said this far exceeds the original NIF specification of 30 J/cm2. These high reflectors deliver >99.75% reflectivity at 45° incidence at the requisite polarization.

David Collier, President of ARO, notes that, "We're extremely proud of this milestone achievement. While ARO is widely known for our long-lived ultraviolet optics for the microlithography and Lasik markets, these high-performance near-infrared optics show that our innovative thin films can deliver tangible advantages across the entire spectrum of demanding laser wavelengths and applications. Most notably, these optics are coated using our trademarked Wavefront Control Optics(tm) process, which is uniquely optimized to compensate for the specific thermomechanical stress and humidity issues found in the target application."

For more information, visit: www.arocorp.com; e-mail: sales@AROcorp.com


Alpine Research Optics
6810 Winchester Circle
Boulder, CO 80301
Phone: (303) 444-3420
Fax: (303) 444-1686



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GLOSSARY
coated optics
Optical elements that have been coated with one or more layers of dielectric, or metallic material. These coatings serve to reduce or increase reflection from the surface, and to protect the surfaces from fumes or abrasion. Magnesium fluoride, silicon dioxide, and zinc sulphide are a few of the most commonly used coating materials.
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