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Measured far-field profiles of the seeded soft x-ray laser pumped by an intensity of (a) , (b) , (c) , and (d) , and the corresponding integrated radial profiles.
(a) Calculated ionization map of the plasma at a krypton pressure of 30 mbar and a pump intensity of . The laser pulse propagates from left to right and the lasing ions are in the white-colored region. (b) Integrated far-field radial profiles of the harmonic amplified by a plasma generated using different pump intensities. Inset: calculated far-field intensity profile of the output beam resulting from amplification by a plasma generated with .
(a) Calculated ionization map of the plasma at a krypton pressure of 5 mbar and a pump intensity of . (b)–(d) are the calculated far-field profiles of the harmonic-seeded 5 mbar krypton pressure amplifier pumped by an intensity of , , and , respectively, with the corresponding integrated radial profiles.
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