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76.2mm x 76.2mm Sapphire Windows

76.2mm x 76.2mm Sapphire Windows

As an excellent filter material, sapphire has good transmittance in the ultraviolet, infrared and visible wavelength. Sapphire can transmit electromagnetic waves and hardly change the properties and energy of electromagnetic waves.

CRYSCORE can supply sapphire optical windows in C-cut with excellent flatness, parallelism, and optical polishing. Scratch / Dig < 10 / 5. Edge chips < 0.2 nm.


76.2mm x 76.2mm Sapphire Windows 76.2mm x 76.2mm Sapphire Windows
Specifications of 76.2mm x 76.2mm Sapphire Windows
Item3” x 3” C-plane(0001) 500μm Sapphire Windows
Crystal Materials99,999%, High Purity, Monocrystalline Al2O3
GradePrime, Epi-Polished
Surface OrientationC-plane(0001)
Size76.2 mm +/- 0.1 mm x 76.2 mm +/- 0.1 mm
Thickness500 μm +/- 25 μm
Front SurfaceEpi-polished, Ra < 0.2 nm (by AFM)
Back SurfaceEpi-polished, Ra < 0.2 nm (by AFM)
TTV< 15 μm
WARP< 40 μm
Flatness2λ Peak-Valley @633 nm each Ø8 mm
Cleaning / PackagingClass 100 cleanroom cleaning and vacuum packaging, 25 pcs in one cassette packaging.

Note: Custom sapphire windows with any orientation and any thickness can be provided.

Sapphire Product- Inquiry
Get More INFO About Sapphire Products
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    Ⅰ. Introduction to the silicon on sapphire technologySilicon on Sapphire (SOS) technology is a heteroepitaxial process used in the manufacture of metal oxide semiconductor (MOS) integrated circuits (...
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    Ⅰ. Introduction to sapphire ingotSapphire ingots are aluminum oxide crystals, which are used to produce sapphire substrates, the most advantageous upstream raw material for LEDs. Under the rapid deve...