Two-Color Soft X-Ray Lasing in a High-Density Nickel-like Krypton Plasma

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Abstract

We report evidence of strong lasing on the 4p-4s transition at 62.7 nm in nickel-like krypton occurring simultaneously with the usual 4d-4p lasing at 32.8 nm. The gain dynamics of both transitions were experimentally and numerically investigated and found comparable. The two-color amplifier was seeded by the same harmonic pulse, therefore producing a short-duration coherent two-color soft X-ray laser pulse. Both transitions offer similar prospects of pulse energy and duration and could lead to the delivery of intense and ultrashort two-color coherent soft X-ray pulses with a controllable delay.

Original languageEnglish
Article number133902
JournalPhysical Review Letters
Volume124
Issue number13
DOIs
Publication statusPublished - 3 Apr 2020

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