Sol-gel processing of zirconia high-index coatings

Mariana S. W. Vong; Paul A. Sermon; Yin Sun; D. M. Spriggs

doi:10.1117/12.228293

8 December 1995 Sol-gel processing of zirconia high-index coatings

Mariana S. W. Vong, Paul A. Sermon, Yin Sun, D. M. Spriggs

Proceedings Volume 2633, Solid State Lasers for Application to Inertial Confinement Fusion (ICF); (1995) https://doi.org/10.1117/12.228293
Event: Solid State Lasers for Application to Inertial Confinement Fusion (ICF), 1995, Monterey, CA, United States

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.

Citation Download Citation

Mariana S. W. Vong, Paul A. Sermon, Yin Sun, and D. M. Spriggs "Sol-gel processing of zirconia high-index coatings", Proc. SPIE 2633, Solid State Lasers for Application to Inertial Confinement Fusion (ICF), (8 December 1995); https://doi.org/10.1117/12.228293

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