Does complex absorption behavior leading to conditioning and damage in KDP/DKDP reflect the electronic structure of initiators?

M. D. Feit; P. P. DeMange; R. A. Negres; A. M. Rubenchik; S. G. Demos

doi:10.1117/12.748444

18 December 2007 Does complex absorption behavior leading to conditioning and damage in KDP/DKDP reflect the electronic structure of initiators?

M. D. Feit, P. P. DeMange, R. A. Negres, A. M. Rubenchik, S. G. Demos

Author Affiliations +

Proceedings Volume 6720, Laser-Induced Damage in Optical Materials: 2007; 672005 (2007) https://doi.org/10.1117/12.748444
Event: Boulder Damage Symposium XXXIX: Annual Symposium on Optical Materials for High Power Lasers, 2007, Boulder, Colorado, United States

Abstract

Currently, most of our thinking about the defects responsible for initiating laser damage considers them as featureless absorbers. However, an increasing body of evidence, particularly involving multi-wavelength irradiation, suggests electronic structure of damage initiators is important in determining both initiation and conditioning behaviors in KDP. The effective absorption coefficient of energy under multi-wavelength irradiation cannot be accounted for by a structureless absorber, but is consistent with an initiator with a multi-level structure. We outline the evidence and assess the ability of such a simple multi-level model to explain these and other experimentally observed behaviors.

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M. D. Feit, P. P. DeMange, R. A. Negres, A. M. Rubenchik, and S. G. Demos "Does complex absorption behavior leading to conditioning and damage in KDP/DKDP reflect the electronic structure of initiators?", Proc. SPIE 6720, Laser-Induced Damage in Optical Materials: 2007, 672005 (18 December 2007); https://doi.org/10.1117/12.748444

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