
180 Light–Matter Interaction
3.4.2. Second Harmonic Type II: Equations for
Arbitrary Phase Mismatch and
Conversion Efficiencies
Treatment in the Time Domain
As pointed out before there is no analytical solution to the general problem of
SH generation. Numerical procedures have to be used to describe the propagation
of the fundamental and the SH pulses under the combined action of (linear)
dispersion and nonlinear effects. The possible effects are particularly complex
and interesting in type II SH generation.
Type II SH generation involves the interaction of three waves, the SH, and an
ordinary (o) and extraordinary (e) fundamental. Group velocity mismatch ...