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11 September 2020 Laser induced damage threshold improvements by surface modification
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In this work we report an experimental investigation of subsurface damage (SSD) in conventionally polished fused silica (FS), sapphire substrates, and YAG crystals which are widely used in laser applications and directly influence performances of critical ultrahigh intensity and high average power laser system optics. Two surface treatment procedures were tested: 1 – plasma treatment, 2 – chemical treatment. Plasma and chemical treatments were applied to fused silica substrates. The laser induced damage threshold (LIDT) FS substrates were studied as the function of etching depth.
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Kestutis Juškevicius, Aaron Davenport, Hanchen Wang, Emmett Randel, Carmen S. Menoni, and Rytis Buzelis "Laser induced damage threshold improvements by surface modification", Proc. SPIE 11514, Laser-induced Damage in Optical Materials 2020, 1151424 (11 September 2020);

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