4 March 1993 High-power optical coatings for a megajoule-class ICF laser
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Abstract
As a consequence of advancements in inertial confinement fusion research, LLNL is developing plans for a new 1.5 to 2 mega-joule solid-state Nd:glass laser designed to achieve fusion ignition. The new design is possible in part due to advances in optical coatings suitable for high-power laser systems. High damage threshold mirrors and polarizers are comprised of electron-beam deposited dielectric multilayers. Subthreshold illumination, or laser conditioning, of the multilayer coatings results in an increase in the damage thresholds by factors of 2 to 3 at 1.06 micrometers , thus meeting the fluence requirements of the advanced architecture. For anti-reflective coatings, protective organic coatings for non-linear crystals and phase plates for beam smoothing, sol-gel films provide high damage thresholds coatings at low cost.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mark R. Kozlowski, Ian M. Thomas, Jack H. Campbell, Frank Rainer, "High-power optical coatings for a megajoule-class ICF laser", Proc. SPIE 1782, Thin Films for Optical Systems, (4 March 1993); doi: 10.1117/12.141024; https://doi.org/10.1117/12.141024
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