  We calculate the production of dileptons and photons in the presence of a
nontrivial Polyakov loop in QCD. This is applicable to the semi-Quark Gluon
Plasma (QGP), at temperatures above but near the critical temperature for
deconfinement. The Polyakov loop is small in the semi-QGP, and near unity in
the perturbative QGP. Working to leading order in the coupling constant of QCD,
we find that there is a mild enhancement, ~ 20%, for dilepton production in the
semi-QGP over that in the perturbative QGP. In contrast, we find that photon
production is strongly suppressed in the semi-QGP, by about an order of
magnitude, relative to the perturbative QGP. In the perturbative QGP photon
production contains contributions from 2->2 scattering and collinear emission
with the Landau- Pomeranchuk-Migdal (LPM) effect. In the semi-QGP we show that
the two contributions are modified differently. The rate for 2->2 scattering is
suppressed by a factor which depends upon the Polyakov loop. In contrast, in an
SU(N) gauge theory the collinear rate is suppressed by 1/N, so that the LPM
effect vanishes at infinite N. To leading order in the semi-QGP at large N, we
compute the rate from 2->2 scattering to the leading logarithmic order and the
collinear rate to leading order.
