Laser-induced damage properties of antireflective porous glasses

Ying Du; Hongbo He; Yunxia Jin; Meiping Zhu; Fanyu Kong; Heyuan Guan

doi:10.1117/12.910285

12 January 2012 Laser-induced damage properties of antireflective porous glasses

Ying Du, Hongbo He, Yunxia Jin, Meiping Zhu, Fanyu Kong, Heyuan Guan

Proceedings Volume 8206, Pacific Rim Laser Damage 2011: Optical Materials for High Power Lasers; 82060Q (2012) https://doi.org/10.1117/12.910285
Event: Pacific Rim Laser Damage Symposium: Optical Materials for High Power Lasers, 2011, Shanghai, China

Abstract

In this paper, porous nanostructures on BK7 glass were manufactured by chemical treatment in order to obtain antireflection (AR) components with improved laser damage resistance. The damage-resistant properties of the samples with nearly 100% transmittances at three pulsed laser wavelength were investigated. The damage tests showed that the BK7 glass with AR nanostructures can achieve the LIDTs of 58J/cm², 20 J/cm² and 12 J/cm² under the irradiation of 12ns 1064nm pulses, 10ns 532nm pulses and 8ns 355nm pulses, respectively. These values are much higher than those of AR coated glasses, but are almost the same level of un-etched substrate. The effect of structural properties on electric field distribution of porous surface was investigated by a three-dimensional (3D) finite difference time-domain (FDTD) model. The simulation results and the morphology of damage site on porous glass are compared to those of un-etched surface, and are discussed to reveal the possible damage mechanism. Finally, some possible solutions to improve the LIDT are proposed.

Citation Download Citation

Ying Du, Hongbo He, Yunxia Jin, Meiping Zhu, Fanyu Kong, and Heyuan Guan "Laser-induced damage properties of antireflective porous glasses", Proc. SPIE 8206, Pacific Rim Laser Damage 2011: Optical Materials for High Power Lasers, 82060Q (12 January 2012); https://doi.org/10.1117/12.910285

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