Zeptosecond high harmonic keV x-ray waveforms driven by midinfrared laser pulses.

Authors:
Dr. Agnieszka Jaron-Becker, PhD
Dr. Agnieszka Jaron-Becker, PhD
University of Colorado at Boulder
Associate Research Professor
Boulder, CO | United States

Phys Rev Lett 2013 Jul 18;111(3):033002. Epub 2013 Jul 18.

Grupo de Investigación en Óptica Extrema, Universidad de Salamanca, E-37008 Salamanca, Spain.

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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http://dx.doi.org/10.1103/PhysRevLett.111.033002DOI Listing
July 2013
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7 Citations
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