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Photonics Marketplace / Laser Crystals / GT Advanced Technologies, Advanced Materials Group
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GT Advanced Technologies
Advanced Materials Group
Map27 Congress St.
Salem, MA 01970
United States
Phone: +1 978-745-0088
Fax: +1 978-744-5059

Large Sized Optical HEM Sapphire

Photonics MarketplaceThe GTAT Advanced Materials Group (AMG) has developed a new sapphire growth process for producing over 22.5” diameter, extremely high-quality, sapphire crystals. The Large Sized Optical HEM Sapphire material has achieved optical performance that has never been achieved in the past.
Large Size Optical HEM Sapphire
Windows fabricated from these large sized boules are being polished to wave front values of 1/20th wave PV and better over the entire clear aperture. These crystals are supporting the industry’s need for durable, reliable, multi-spectral, high optical quality aeronautical windows. These large sapphire crystals are available in sizes of up to 22.5” in diameter with no window thickness restrictions. This high purity material can be manufactured to your optical requirements in A-plane and C-plane configurations with no bubbles or inclusions.

The window blanks are manufactured in our state-of-the-art sapphire window blank machining cell in Salem, Massachusetts. Unique, large sized sapphire components such as domes, tubes and pistons are also available with precision surfaces according to your needs. Choose our Large Sized Optical HEM Sapphire so that your system is covered by the very best optical material available.

Attributes and Features

     •  22” diameter and larger
     •  No thickness restrictions
     •  Large C-plane and A-plane configurations
     •  Homogeneity supports 1/20th wave and better TWE
     •  No bubbles or inclusions
     •  High altitude, flight proven performance

Applications

Large Sized Optical HEM Sapphire, only available from GTAT, is being flown today on the most critical missions because of its proven performance and strength. This material excels in aeronautical and other applications where optical performance and survivability cannot be compromised.

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