Figure 1
From: Decoupling Frequencies, Amplitudes and Phases in Nonlinear Optics
Energy diagrams for different scenarios of nonlinear interaction: (A) cw lasers, (B) broadband pulses in conventional time domain nonlinear optics (TNO) and (C) broadband pulses in frequency domain nonlinear optics (FNO). In TNO (B), all frequencies interact simultaneously leading to a mutual convolution of amplitudes and phases. In contrast, FNO (C) decouples the frequencies by performing a series of independent “quasi-cw” interactions prior to their recombination back into the time domain.
