Share Email Print
cover

Proceedings Paper

Scatter loss from environmental degradation of KDP crystals
Author(s): Elizabeth K. Wheeler; J. T. McWhirter; Pamela K. Whitman; C. B. Thorsness; James J. De Yoreo; Ian M. Thomas; M. Hester
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Severe scattering losses from KDP crystals have been correlated with the exposure of porous sol AR coated crystal to ambient humidity. The scattering is attributed to formation of etch pits which develop under the coating on the KDP surface along crystallographic axes. This high angle scattering can in turn produce laser damage of downstream optics either through modulation of the beam or by optic contamination from ablation of adjacent metal structures. We have developed a simple tool to characterize the evolution of scatter from sol-coated KDP surface.s We have measured the rate of etch pit formation as a function of relative humidity and surface treatment using both microscopy and scattering. We will discuss various surface treatments which can be utilized to retrad or eliminate the environmental degradation of KDP crystals.

Paper Details

Date Published: 3 March 2000
PDF: 9 pages
Proc. SPIE 3902, Laser-Induced Damage in Optical Materials: 1999, (3 March 2000); doi: 10.1117/12.379328
Show Author Affiliations
Elizabeth K. Wheeler, Lawrence Livermore National Lab. (United States)
J. T. McWhirter, Union College (United States)
Pamela K. Whitman, Lawrence Livermore National Lab. (United States)
C. B. Thorsness, Lawrence Livermore National Lab. (United States)
James J. De Yoreo, Lawrence Livermore National Lab. (United States)
Ian M. Thomas, Lawrence Livermore National Lab. (United States)
M. Hester, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 3902:
Laser-Induced Damage in Optical Materials: 1999
Gregory J. Exarhos; Arthur H. Guenther; Mark R. Kozlowski; Keith L. Lewis; M. J. Soileau, Editor(s)

© SPIE. Terms of Use
Back to Top