The aim of the present thesis was the experimental study of all-optical chaos control. A control setup proposed 16 years ago [SSG94] is implemented for the first time: experimental delayed feedback control operating solely in the optical domain. Delayed feedback control [Pyr92] is a powerful method, which enables stabilization of unstable states in dynamical systems, e.g. within chaos. It is strikingly simple to realize – an output signal is compared with a temporally delayed version of itself, and fed back as input to the controlled system.