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2 December 2022 Characterization of particulate contamination inside the OMEGA EP grating compressor chamber
Brittany N. Hoffman, Nickolaos Savidis, Sharyl Abbey, Adam Kalb, Stavros G. Demos
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Proceedings Volume PC12300, Laser-Induced Damage in Optical Materials 2022; PC123000U (2022) https://doi.org/10.1117/12.2642415
Event: SPIE Laser Damage, 2022, Rochester, New York, United States
Abstract
Laser-damage performance of optics is known to be negatively affected by microscale particle contamination induced by the operational environment. In this work, we discuss our approach to quantifying particulates found inside the grating compressor chamber in the OMEGA EP Laser System. Particulate was collected at specific locations near multilayer dielectric (MLD) gratings and MLD high reflectors and subsequently characterized using optical microscopy, scanning electron microscopy, and energy dispersive x ray spectroscopy. Initial results suggest that higher concentrations are observed near the beamline ports from the target chambers.
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Brittany N. Hoffman, Nickolaos Savidis, Sharyl Abbey, Adam Kalb, and Stavros G. Demos "Characterization of particulate contamination inside the OMEGA EP grating compressor chamber", Proc. SPIE PC12300, Laser-Induced Damage in Optical Materials 2022, PC123000U (2 December 2022); https://doi.org/10.1117/12.2642415
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KEYWORDS
Particles
Optics manufacturing
Contamination
Laser damage threshold
Laser optics
Optical components
Scanning electron microscopy
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