(a) how the intensity of the second harmonics generation depends on the intensity of the fundamental harmonics (consider d process)? (b) if the fundamental harmonics pulse is a gaussian pulse with the duration of 10 ns, what is the duration of the second harmonics pulse (consider o process)? () how the intensity of the third harmonies generation depends on the intensity of the fundamental harmonics (consider 0' process)? (d) in a parametric amplification process, how the intensity of the small-signal amplification depends on the pumping intensity (consider d process)?