Antireflective surfaces for high-energy laser optics formed by neutral-solution processing

Antireflective surfaces were produced on optical borosilicate glass by controlled corrosion in nearly neutral solutions. The surfaces have reflectivity below 0.1% and median threshold for laser-induced damage by 1-nsec 1.06-microm pulses of 12 J/cm(2); twice the median damage threshold of thin film antireflection coatings.