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Proceedings Paper

Ultraviolet laser damage and optical properties of high-refractive-index single layers, multiple layers, and high/low index multilayer stacks
Author(s): Hazel A. McInnes; James E. Andrew; Nicholas J. Bazin; A. J. Morris; K. J. Porter
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Paper Abstract

Laser induced damage thresholds, measured using N-on-1 and R-on-1 testing, of single layer high index zirconia and hafnia coatings, derived from nitric or acetic acid stabilized sol-gel processing, are reported. Single layer acetic acid, nitric acid and base catalyzed silica sol-gel coatings have also been tested. The sol-gels were dip coated onto fused silica substrates at a rate of 3mm/s. The refractive index of the materials were measured using transmission spectra of multiple pairs of high and low refractive index materials. Absorption in the UV region was similarly measured with multiple layers of the same material and fitting to a Beer's law behavior. The high index materials used were zirconia or hafnia, the low index material was silica. The compatibility of the various combinations of high and low index materials for physical stacking without cracking, achieving high reflectivity and high damage thresholds are discussed and compared.

Paper Details

Date Published: 20 April 1998
PDF: 9 pages
Proc. SPIE 3244, Laser-Induced Damage in Optical Materials: 1997, (20 April 1998);
Show Author Affiliations
Hazel A. McInnes, AWE plc (United Kingdom)
James E. Andrew, AWE plc (United Kingdom)
Nicholas J. Bazin, AWE plc (United Kingdom)
A. J. Morris, AWE plc (United Kingdom)
K. J. Porter, AWE plc (United Kingdom)

Published in SPIE Proceedings Vol. 3244:
Laser-Induced Damage in Optical Materials: 1997
Gregory J. Exarhos; Arthur H. Guenther; Mark R. Kozlowski; M. J. Soileau, Editor(s)

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