We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Gain dynamics in a soft-X-ray laser amplifier perturbed by a strong injected X-ray field.
- Authors
Wang, Y.; Wang, S.; Oliva, E.; Li, L.; Berrill, M.; Yin, L.; Nejdl, J.; Luther, B. M.; Proux, C.; Le, T. T. T.; Dunn, J.; Ros, D.; Zeitoun, Ph.; Rocca, J. J.
- Abstract
Seeding soft-X-ray plasma amplifiers with high harmonics has been demonstrated to generate high-brightness soft-X-ray laser pulses with full spatial and temporal coherence. The interaction between the injected coherent field and the swept-gain medium has been modelled. However, no experiment has been conducted to probe the gain dynamics when perturbed by a strong external seed field. Here, we report the first X-ray pump-X-ray probe measurement of the nonlinear response of a plasma amplifier perturbed by a strong soft-X-ray ultra-short pulse. We injected a sequence of two time-delayed high-harmonic pulses (λ = 18.9 nm) into a collisionally excited nickel-like molybdenum plasma to measure with femtosecond resolution the gain depletion induced by the saturated amplification of the high-harmonic pump and its subsequent recovery. The measured fast gain recovery in 1.5-1.75 ps confirms the possibility to generate ultra-intense, fully phase-coherent soft-X-ray lasers by chirped pulse amplification in plasma amplifiers.
- Subjects
ELECTRONIC amplifiers; X-ray lasers; PERTURBATION theory; COHERENCE (Optics); PLASMA physics
- Publication
Nature Photonics, 2014, Vol 8, Issue 5, p381
- ISSN
1749-4885
- Publication type
Article
- DOI
10.1038/nphoton.2014.79