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Proceedings Paper

Laser-induced damage properties of antireflective porous glasses
Author(s): Ying Du; Hongbo He; Yunxia Jin; Meiping Zhu; Fanyu Kong; Heyuan Guan
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Paper 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.

Paper Details

Date Published: 12 January 2012
PDF: 13 pages
Proc. SPIE 8206, Pacific Rim Laser Damage 2011: Optical Materials for High Power Lasers, 82060Q (12 January 2012); doi: 10.1117/12.910285
Show Author Affiliations
Ying Du, Shanghai Institute of Optics and Fine Mechanics (China)
Graduate School of Chinese Academy of Sciences (China)
Hongbo He, Shanghai Institute of Optics and Fine Mechanics (China)
Yunxia Jin, Shanghai Institute of Optics and Fine Mechanics (China)
Meiping Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Fanyu Kong, Shanghai Institute of Optics and Fine Mechanics (China)
Graduate School of Chinese Academy of Sciences (China)
Heyuan Guan, Shanghai Institute of Optics and Fine Mechanics (China)
Graduate School of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 8206:
Pacific Rim Laser Damage 2011: Optical Materials for High Power Lasers
Jianda Shao, Editor(s)

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