Interactions between x-ray induced transient defects and pre-existing damage precursors in DKDP crystals

R. A. Negres; C. K. Saw; S. G. Demos

doi:10.1117/12.804246

30 December 2008 Interactions between x-ray induced transient defects and pre-existing damage precursors in DKDP crystals

R. A. Negres, C. K. Saw, S. G. Demos

Author Affiliations +

Proceedings Volume 7132, Laser-Induced Damage in Optical Materials: 2008; 713212 (2008) https://doi.org/10.1117/12.804246
Event: Boulder Damage Symposium XL Annual Symposium on Optical Materials for High Power Lasers, 2008, Boulder, Colorado, United States

Abstract

Large-aperture laser systems, currently designed to achieve high energy densities at the target location (exceeding ~ 1011 J/m³), will enable studies of the physics of matter and radiation under extreme conditions. As a result, their optical components, such as the frequency conversion crystals (KDP/DKDP), may be exposed to X-rays and other ionizing radiation. This in turn may lead to a change in the damage performance of these materials as they may be affected by radiation-induced effects by either forming new damage initiation centers or interacting with the pre-existing damage initiating defects (so-called damage precursors). We present an experimental study on the laser-induced bulk damage performance at 355-nm of DKDP crystals following X-ray irradiation at room temperature. Results indicate that the damage performance of the material is affected by exposure to X-rays. We attribute this behavior to a change in the physical properties of the precursors which, in turn, affect their individual damage threshold.

Citation Download Citation

R. A. Negres, C. K. Saw, and S. G. Demos "Interactions between x-ray induced transient defects and pre-existing damage precursors in DKDP crystals", Proc. SPIE 7132, Laser-Induced Damage in Optical Materials: 2008, 713212 (30 December 2008); https://doi.org/10.1117/12.804246

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