By using the model of an optically bistable injection-locked semiconductor Fabry-Perot laser diode, we theoretically investigate the case of dual injection-locking, in which the two light signals are simultaneously externally injected into the cavity of a slave laser. We show that dual injection-locking leads to formation of new stationary points, i.e., to optical tristability of the slave laser. We analyze the range of injection power and frequency detuning for which this tristability occurs.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.