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Proceedings Paper

Sol-gel processing of zirconia high-index coatings
Author(s): Mariana S. W. Vong; Paul A. Sermon; Yin Sun; D. M. Spriggs
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Paper Abstract

Aqueous-inorganic (AIZ) and organic (OZ) zirconia sols have been synthesized by hydrothermal and alcothermal techniques. The size and structure of the ZrO2 nanoparticles of which the sols are composed are dependent on the reaction precursors and the synthesis conditions used. AIZ produced crystallites which are a mixture of monoclinic and metastable tetragonal ZrO2 while the OZ route yielded mainly amorphous particles. ZrO2 coatings deposited from both sols show comparable laser-induced damage thresholds to SiO2 sol-gel anti-reflective (AR) coatings. Thus, they could be candidates for the high index component in alternating SiO2/ZrO2 stacks for highly reflective mirrors. Here we describe sol-gel routes to ZrO2 coatings and the benefits in terms of resistance to laser damage of the addition of polyethylene glycol (PEG). The relevant microchemistry is discussed.

Paper Details

Date Published: 8 December 1995
PDF: 11 pages
Proc. SPIE 2633, Solid State Lasers for Application to Inertial Confinement Fusion (ICF), (8 December 1995); doi: 10.1117/12.228293
Show Author Affiliations
Mariana S. W. Vong, Brunel Univ. (United Kingdom)
Paul A. Sermon, Brunel Univ. (United Kingdom)
Yin Sun, State Key Lab. of Coal Chemistry (China)
D. M. Spriggs, Atomic Weapons Research Establishment (United Kingdom)

Published in SPIE Proceedings Vol. 2633:
Solid State Lasers for Application to Inertial Confinement Fusion (ICF)
Michel Andre; Howard T. Powell, Editor(s)

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