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Journal articles

Observation of spectral gain narrowing in a high-order harmonic seeded soft-x-ray amplifier

Abstract : We report an observation of spectral gain narrowing of a high-order harmonic amplified by a soft-x-ray optical-field-ionized plasma. The temporal coherence and spectral linewidth of both the seeded and unseeded soft-x-ray lasers were experimentally measured using a varying-path-difference interferometer. The results showed that the high-order harmonic is subject to a strong spectral narrowing during its propagation in the plasma amplifier without rebroadening at saturation. This is in good agreement with a radiative transfer calculation including gain narrowing and saturation rebroadening.
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https://hal-polytechnique.archives-ouvertes.fr/hal-00508797
Contributor : Thuy Le Connect in order to contact the contributor
Submitted on : Thursday, August 5, 2010 - 6:08:36 PM
Last modification on : Wednesday, May 11, 2022 - 3:22:03 PM

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F. Tissandier, Stéphane Sebban, Maxime Ribière, Julien Gautier, Philippe Zeitoun, et al.. Observation of spectral gain narrowing in a high-order harmonic seeded soft-x-ray amplifier. Physical Review A, American Physical Society, 2010, 81 (6), pp.063833. ⟨10.1103/PhysRevA.81.063833⟩. ⟨hal-00508797⟩

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