Share Email Print
cover

Proceedings Paper

Effect of binders on the damage threshold and refractive index of coatings prepared from colloidal suspensions
Author(s): Ian M. Thomas
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The addition of polyvinyl alcohol (PVA) to aqueous suspensions of AlOOH, ZrO2, and HfO2 has been found to increase the damage threshold and refractive index of coatings prepared from these suspensions. The increase in damage threshold may be due to the increase in coating strength brought about by the enhanced particle-to-particle bond strength due to the polymer binder. The binder also increases the refractive index by decreasing the porosity. This leads to a reduction in the number of layer pairs required for high reflection in a typical HR coating. A mirror consisting of only ten layer pairs of HfO2-SiO2 with PVA binder in the HfO2 had a reflectivity of over 99% at 1.06 micrometers and a damage threshold of 25 - 28 J/cm2 at 1.06 micrometers with a 10 ns pulse.

Paper Details

Date Published: 24 June 1993
PDF: 9 pages
Proc. SPIE 1848, 24th Annual Boulder Damage Symposium Proceedings -- Laser-Induced Damage in Optical Materials: 1992, (24 June 1993); doi: 10.1117/12.147405
Show Author Affiliations
Ian M. Thomas, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 1848:
24th Annual Boulder Damage Symposium Proceedings -- Laser-Induced Damage in Optical Materials: 1992
Harold E. Bennett; Lloyd L. Chase; Arthur H. Guenther; Brian Emerson Newnam; M. J. Soileau, Editor(s)

© SPIE. Terms of Use
Back to Top