  Top quark pair production by (polarized) gamma gamma collisions offers an
interesting testing ground of the Standard Model and its extensions. In this
Letter we present results for differential cross sections of top quark pair
production and decay including QCD radiative corrections. We take into account
the full dependence on the top quark spins. We give analytic and numerical
results for single and double differential angular distributions of t tbar
decay products which are due to top quark polarizations and spin correlations
in the intermediate state.
