Title :
Surface defect generation in optical materials under high fluence laser irradiation in vacuum
Author :
Demos, S.G. ; Burnham, A. ; Wegner, P. ; Norton, M. ; Zeller, J. ; Runkel, M. ; Kozlowski, M.R. ; Staggs, M. ; Radousky, H.B.
Author_Institution :
Lawrence Livermore Nat. Lab., CA, USA
fDate :
3/16/2000 12:00:00 AM
Abstract :
It is shown that irradiation of optical materials with high fluence ultraviolet laser pulses at low pressure leads to a rapid growth in the surface defect population and degradation of their performance. Experiments have been performed in nonlinear KH2PO4 crystal and in fused silica, and surface defect populations have been observed following a few tens of high fluence 351 nm pulses
Keywords :
hydrogen compounds; laser beam effects; optical materials; potassium compounds; silicon compounds; 351 nm; KH2PO4; SiO2; fused silica; nonlinear KDP crystal; optical material; surface defect generation; ultraviolet laser pulse irradiation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20000419
