
doi: 10.1364/ol.12.000090
pmid: 19738802
We propose using a prolate ellipsoid for collecting and focusing soft-x-ray radiation from a laser-produced plasma to longitudinally pump short-wavelength lasers. Total collection efficiencies greater than 20% at 10 nm into gain regions with aspect ratios of 25 are possible. This geometry offers several advantages with respect to present transverse multiple-spot geometries.
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