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US 2003/0119650 A1Published application
Fused silica containing aluminum
AssigneeCorning Incorporated
InventorDaniel R. Sempolinski
Life of this patent
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Abstract
Fused silica articles containing at least 50 ppb aluminum are disclosed. The fused silica articles containing these levels of aluminum exhibit improved internal transmission and decreased absorption change when irradiated with a laser when compared with fused silica articles containing lower levels of aluminum.
Claims8
A fused silica glass article resistant to optical damage in ultraviolet radiation in the wavelength range between 190 and 300 nm and containing aluminum in an amount greater than 50 ppb and having a minimum internal transmission greater than or equal to 99.65%/cm at a wavelength of 193 nm.
Dependencies are inferred from the claim text.