Influence of glass surface layers on laser-induced damage threshold

Zhengtian Gu; Peihui Liang; Weiqing Zhang

doi:10.1117/12.461704

9 April 2002 Influence of glass surface layers on laser-induced damage threshold

Zhengtian Gu, Peihui Liang, Weiqing Zhang

Proceedings Volume 4679, Laser-Induced Damage in Optical Materials: 2001; (2002) https://doi.org/10.1117/12.461704
Event: Boulder Damage, 2001, Boulder, CO, United States

Abstract

The existence of glass surface layers has a great influence upon the optical properties of the thin films coated on glass substrate, particularly upon laser-induced damage threshold. A new and simple method is proposed to analyze the glass surface layers based on p-polarized light reflectance. Experimentally, the glasses with different cleaning treatments have been analyzed. The results show that the glass with acid erosion has smaller extinction coefficient, and the cleanliness and the laser damage threshold increase accordingly. Furthermore, we measure the laser-induced damage thresholds of SiO₂ antireflective films coated on several glass substrates above-mentioned. It is indicated that the laser-induced damage threshold under the acid and alkaline cleaning treatment increase by about 80% over the water cleaning treatment.

Citation Download Citation

Zhengtian Gu, Peihui Liang, and Weiqing Zhang "Influence of glass surface layers on laser-induced damage threshold", Proc. SPIE 4679, Laser-Induced Damage in Optical Materials: 2001, (9 April 2002); https://doi.org/10.1117/12.461704

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