It is well known that the cutoff energy of high harmonic generation (HHG) increases linearly with the pump intensity and quadratically with pump wavelength [1]. It is also well known that quantum diffusion suppresses the HHG photon yield by a factor that decreases cubically with the pump wavelength [1]. This cubical scaling was one of the reasons why most of the HHG studies focused on 0.8 µm m rather than longer wavelength drive pulses (LWDP), in spite of the increased cutoff energy associated with the latter.     «

It is well known that the cutoff energy of high harmonic generation (HHG) increases linearly with the pump intensity and quadratically with pump wavelength [1]. It is also well known that quantum diffusion suppresses the HHG photon yield by a factor that decreases cubically with the pump wavelength [1]. This cubical scaling was one of the reasons why most of the HHG studies focused on 0.8 µm m rather than longer wavelength drive pulses (LWDP), in spite of the increased cutoff energy associated w...     »