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arXiv · 1504.06578

A practical scheme for generating isolated elliptically polarized attosecond pulses using bi-chromatic counter rotating circularly polarized laser fields

Lukas Medišauskas·Jack Wragg·Hugo van der Haart·Misha Yu. Ivanov
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Abstract

Spectra of circularly polarized harmonics is calculated by numerically solving the Time-Dependent Schr\"{o}dinger Equation for a 2D model of Ne atom using circularly polarized fundamental with counter-rotating second harmonic laser fields. We demonstrate strong asymmetry between left- and right- circularly polarized harmonics when a ground state with p-type symmetry is used. It arises due to the circular polarization of individual attosecond pulses in the generated pulse train. Reducing the length of the counter-rotating drivers and introducing a small time-shift between them allows to generate a single elliptically polarized attosecond pulse.

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Lukas Medišauskas, Jack Wragg, Hugo van der Haart, Misha Yu. Ivanov. 2015-04-24. A practical scheme for generating isolated elliptically polarized attosecond pulses using bi-chromatic counter rotating circularly polarized laser fields. https://doi.org/10.1103/physrevlett.115.153001

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