  We describe a simple and compact architecture for generating all optical
frequencies required for the laser cooling, state preparation and detection of
atoms in an ultracold rubidium-87 experiment from a single 780 nm laser source.
In particular, repump light $\sim$ 6.5 GHz away from the cooling transition is
generated by using a high-bandwidth fiber-coupled eletro-optical modulator
(EOM) in a feedback loop configuration. The looped repump light generation
scheme solves the problem of the limited power handling capabilities
characteristics of fiber EOMs. We demonstrate the functionality of the system
by creating a high atom number magneto-optical trap (MOT)
