Fig. 3
From: Odd electron wave packets from cycloidal ultrashort laser fields

Reconstructed 3D PMDs from bichromatic MPI with (3ω:4ω) BiCEPS pulses. a Excitation scheme of Na atoms interacting with (3ω:4ω) CRCP (red and blue solid arrows) and COCP (red solid and blue dashed arrows) fields. b The reconstructed FEWP from bichromatic MPI with CRCP fields exhibits sevenfold rotational symmetry. c The FEWP from MPI with COCP fields is asymmetric and localized in one-half of the polarization plane. Both results exemplify our general scheme to create odd-numbered rotational symmetric and asymmetric FEWPs