Presentation + Paper
9 September 2019 Extreme ultraviolet laser ablation of solid targets
Author Affiliations +
Abstract
A capillary laser with output in the extreme ultra-violet at wavelength 46.9 nm is used to ablate solid targets of parylene- N (CH), PMMA, aluminum and gold. We summarize results obtained using different focusing optics: a Fresnel zone plate, an off-axis spherical multi-layer mirror and on-axis multi-layer and gold mirrors. The Fresnel zone plate has a small aperture and focuses a small fraction of the laser energy to a small diameter (< 1 μm) with peak intensities 6 x 109Wcm-2. The off-axis spherical multi-layer mirror allows for a measurement of the transmission of the laser through thin targets, but the off-axis geometry produced an aberrated focus. The on-axis multi-layer mirror allows focusing to intensities of approximately 5 x 1010 Wcm-2 with a cylindrically symmetric focus.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. J. Tallents, S. A. Wilson, J. Lolley, V. Aslanyan, A. West, A. K Rossall, E. Solis-Meza, E. Wagenaars, C. S. Menoni, and J. J. Rocca "Extreme ultraviolet laser ablation of solid targets", Proc. SPIE 11111, X-Ray Lasers and Coherent X-Ray Sources: Development and Applications XIII, 1111106 (9 September 2019); https://doi.org/10.1117/12.2528736
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KEYWORDS
Laser ablation

Mirrors

Plasma

Capillaries

Extreme ultraviolet

Spherical lenses

Laser applications

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