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X-ray lasers

Plasma interactions with bespoke laser pulses

Due to dispersion, the group velocity of laser pulses propagating in plasmas slows down with increasing wavelength, which presents challenges for precision-controlled plasma interactions. Now, new techniques for spatio-temporal pulse shaping have lifted this limitation in the demonstration of short-pulse table-top soft X-ray lasers.

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Fig. 1: Schematic of a high-harmonic generation-seeded collisional plasma-based soft X-ray laser with a waveguiding and group-velocity-controlled pump beam.

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Correspondence to Sam K. Barber.

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Barber, S.K. Plasma interactions with bespoke laser pulses. Nat. Photon. 17, 295–296 (2023). https://doi.org/10.1038/s41566-023-01179-z

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