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

Conference · Wed Oct 24 00:00:00 EDT 2007

DOI:https://doi.org/10.1117/12.748444· OSTI ID:923118

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

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.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 923118
• Report Number(s): UCRL-PROC-236469; TRN: US200804%%947
• Resource Relation: Journal Volume: 6720; Conference: Presented at: Boulder Damage Symposium, Boulder, CO, United States, Sep 24 - Sep 26, 2007
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ABSORPTION
DEFECTS
ELECTRONIC STRUCTURE
IRRADIATION
LASERS