Abstract

Graded-index antireflection (AR) surfaces can be developed on phase-separated optical-quality glass. These surfaces have a median damage threshold of 12 J/cm2 for 1-ns, 1.06-μm laser pulses which is 2.5 times higher than the threshold of thin-film AR coatings, and reflectivity ≲0.2%, comparable to thin-film coatings.

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