Fig. 4
From: Odd electron wave packets from cycloidal ultrashort laser fields
Phase control of FEWPs from bichromatic MPI with CRCP and COCP (3ω:4ω) pulses. Energy-calibrated central x-y-sections of the reconstructed PMDs for different values of the CEP φce and the relative phase φ2 in cartesian (upper panels) and polar (lower panels) representation. Zero phase results from Fig. 3 are shown in a, d for comparison. b Variation of the CEP to φce = π rotates the propeller-type CRCP field (see inset) and the corresponding FEWP by \(\alpha _0^{{\mathrm{cr}}} = \pi {\mathrm{/}}7\) about the laser propagation direction. The same rotation, albeit in opposite direction, is induced by the relative phase φ2 = π/3 of the blue field, leading to the same shape of field and FEWP in c. In the COCP case, a CEP variation to φce = π rotates the heart-shaped pulse by \(\alpha _0^{{\mathrm{co}}} = \pi\). The crescent-shaped FEWP follows the field rotation, as shown in e. f An equivalent rotation in opposite direction is induced by the relative phase of φ2 = π/3. The center of the azimuthal lobes, indicated by vertical lines in the bottom frames, were derived from sinusoidal fits presented in Supplementary Note 3
