TY - GEN
T1 - Extreme ultra-violet laser ablation of solid targets
AU - Tallents, Gregory John
AU - Wilson, Sarah Arabella
AU - Lolley, James
AU - Aslanyan, Valentin
AU - West, Andrew
AU - Rossall, Andrew Keith
AU - Solis Meza, Eduardo
AU - Wagenaars, Erik
AU - Menoni, Carmen
AU - Rocca, Jorge
N1 - © 2019 SPIE. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.
PY - 2019/9/19
Y1 - 2019/9/19
N2 - 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 10^9Wcm^-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 10^10 Wcm^-2 with a cylindrically symmetric focus.
AB - 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 10^9Wcm^-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 10^10 Wcm^-2 with a cylindrically symmetric focus.
U2 - 10.1117/12.2528736
DO - 10.1117/12.2528736
M3 - Conference contribution
VL - 11111
BT - Proc. SPIE conference series
ER -