well, i suspect its less of a 'physicsy' problem than one might hope.
generally, when things are working well the output SHG more or less matches the input pulse shape with some extra chirp and/or dispersion which can often be disregarded.
in our case, we see this 'good' output shape...
hi all-
having a strange (perhaps expected?) problem inserting a BBO into the optical path of a TiSaph fs laser.
the issue is that i can achieve strong SHG output, but only with *severe* spatial distortion of the pulse shape.
has anyone had experience/encountered this issue in an...