Predicting laser-induced bulk damage and conditioning for deuterated potassium di-hydrogen phosphate crystals using ADM (absorption distribution model)

Journal Article · Fri Feb 26 04:00:00 EST 2010 · Optics Letters

OSTI ID:992762

Liao, Z M; Spaeth, M L; Manes, K; Adams, J J; Carr, C W

We present an empirical model that describes the experimentally observed laser-induced bulk damage and conditioning behavior in deuterated Potassium dihydrogen Phosphate (DKDP) crystals in a self-consistent way. The model expands on an existing nanoabsorber precursor model and the multi-step absorption mechanism to include two populations of absorbing defects, one with linear absorption and another with nonlinear absorption. We show that this model connects previously uncorrelated small-beam damage initiation probability data to large-beam damage density measurements over a range of ns pulse widths relevant to ICF lasers such as the National Ignition Facility (NIF). In addition, this work predicts the damage behavior of laser-conditioned DKDP and explains the upper limit to the laser conditioning effect. The ADM model has been successfully used during the commissioning and early operation of the NIF.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 992762
• Report Number(s): LLNL-JRNL-447554
• Journal Information: Optics Letters, Journal Name: Optics Letters Journal Issue: 15 Vol. 35; ISSN 0146-9592; ISSN OPLEDP
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ABSORPTION
DEFECTS
DEUTERIUM COMPOUNDS
LASER RADIATION
MATHEMATICAL MODELS
POTASSIUM PHOSPHATES
RADIATION EFFECTS
US NATIONAL IGNITION FACILITY