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Proceedings Paper

Light scattering from laser-induced shallow pits on silica exit surfaces
Author(s): E. Feigenbaum; R. N. Raman; N. Nielsen; M. J. Matthews
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Paper Abstract

We study the formation of laser-induced shallow pits (LSPs) on silica output surfaces and relate these features to optical performance as a function of incident laser fluence. Typical characteristics of the LSPs morphology are presented. Closed-form expressions for the scattered power and far-field angular distribution are derived and validated using numerical calculations of both Fourier optics and FDTD solutions to Maxwell’s equations. The model predictions agree well with the measurements for precise profile micro-machined shallow pits on glass, and for pitting caused by laser cleaning of bound metal micro-particles at different fluences.

Paper Details

Date Published: 23 November 2015
PDF: 8 pages
Proc. SPIE 9632, Laser-Induced Damage in Optical Materials: 2015, 96320H (23 November 2015); doi: 10.1117/12.2195504
Show Author Affiliations
E. Feigenbaum, Lawrence Livermore National Lab. (United States)
R. N. Raman, Lawrence Livermore National Lab. (United States)
N. Nielsen, Lawrence Livermore National Lab. (United States)
M. J. Matthews, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 9632:
Laser-Induced Damage in Optical Materials: 2015
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; MJ Soileau, Editor(s)

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