High Optical Harmonics Polarization State Due To Incident Field Spatial Inhomogeneity

High optical harmonics generation process in atomic gases interacting with bichromatic laser field in non-ollinear scheme is studied with the aim of polarization state of atomic response investigation in dependence on incident field spatial properties. It is shown that the non-dipole transitions (the impact of which increases with laser field intensity) play the crucial role in discussed process.