Figure 6
From: Polarization shaping of high-order harmonics in laser-aligned molecules
Generation of the 9th harmonic depicted in the multiphoton representation.
The molecules are aligned with a linearly-polarized pulse and the harmonic is generated by a left-handed circularly-polarized fundamental pulse (σ+) of frequency ω; (a) only the field driving the harmonic generation is applied; (b) the molecule is first aligned and then exposed to the fundamental driving pulse; (c) the same as (b) but with different intermediate transitions.
