Two-photon spectroscopy

[Brian Williams <williams - at - bucknell.edu>]

 Dear all- Is there anyone on the CCL list who has any experience trying to
 use a computational approach to estimating what the two-photon spectra for
 an organic might be?  I have some understanding of how to get at UV spectra
 using CIS methods, but I am curious to know whether this approach or the
 information derived from such a calcuation might be used to get a
 quick/dirty estimate of two-photon spectra.  I'm starting pretty much from
 scratch here, so any/all advice would be helpful. Thanks.
 Brian Williams, Chemistry