Abstract

Measurements of transmission loss coefficients in AgGaSe2 at 2.1 μm ranged from 0.012 to 0.072 cm−1. Energy density, not peak-power density, proved to be the determining factor in AgGaSe2 damage threshold. Coated-surface damage thresholds originally were found to be in the 1.1–2.5-J/cm2 region by using 180-nsec laser pulses, but damage thresholds as high as 3.5 J/cm2, with a 3 J/cm2 average, were measured in coated samples with improved surface quality.

© 1991 Optical Society of America

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