System and method for laser-based, non-evaporative repair of damage sites in the surfaces of fused silica optics
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United States of America Patent
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Sep 6, 2016
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N/A
app pub date -
Dec 6, 2012
filing date -
Dec 6, 2011
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Abstract
A method for repairing a damage site on a surface of an optical material is disclosed. The method may involve focusing an Infrared (IR) laser beam having a predetermined wavelength, with a predetermined beam power, to a predetermined full width (“F/W”) 1/e2 diameter spot on the damage site. The focused IR laser beam is maintained on the damage site for a predetermined exposure period corresponding to a predetermined acceptable level of downstream intensification. The focused IR laser beam heats the damage site to a predetermined peak temperature, which melts and reflows material at the damage site of the optical material to create a mitigated site.
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