Instabilities in a mutually pumped phase conjugator of BaTiO_3

Abstract
Various instabilities, such as regular and irregular pulsation, periodic oscillation, and optical chaos, have been observed by selecting geometric parameters in a mutually pumped phase conjugator (PC) of BaTiO3. The behavior of the PC output in the periodic oscillation state was studied in detail. Some explanations, for instance, competition among the coupling channels and interference between two PC beams coming from different channels, are proposed.