Zeptosecond High Harmonic keV X-Ray Waveforms Driven by Midinfrared Laser Pulses | Zendy

Carlos Hernández-García | Zendy; J. A. Pérez-Hernández | Zendy; Tenio Popmintchev | Zendy; Margaret M. Murnane | Zendy; Henry C. Kapteyn | Zendy; Agnieszka Jaroń-Becker | Zendy; Andreas Becker | Zendy; Luis Plaja | Zendy

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Zeptosecond High Harmonic keV X-Ray Waveforms Driven by Midinfrared Laser Pulses

Author(s) -

Carlos Hernández-García,

J. A. Pérez-Hernández,

Tenio Popmintchev,

Margaret M. Murnane,

Henry C. Kapteyn,

Agnieszka Jaroń-Becker,

Andreas Becker,

Luis Plaja

Publication year - 2013

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.111.033002

Subject(s) - femtosecond , laser , chirp , physics , wave packet , harmonic , high harmonic generation , photon , waveform , optics , atomic physics , electron , pulse (music) , interference (communication) , infrared , materials science , detector , channel (broadcasting) , electrical engineering , quantum mechanics , voltage , engineering

We demonstrate theoretically that the temporal structure of high harmonic x-ray pulses generated with midinfrared lasers differs substantially from those generated with near-infrared pulses, especially at high photon energies. In particular, we show that, although the total width of the x-ray bursts spans femtosecond time scales, the pulse exhibits a zeptosecond structure due to the interference of high harmonic emission from multiple reencounters of the electron wave packet with the ion. Properly filtered and without any compensation of the chirp, regular subattosecond keV waveforms can be produced.

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