Binary phase oscillation of two mutually coupled semiconductor lasers

Shoko Utsunomiya, Naoto Namekata, Kenta Takata, Daisuke Akamatsu, Shuichiro Inoue, Yoshihisa Yamamoto
2015 Optics Express  
A two-site Ising model is implemented as an injection-locked laser network consisting of a single master laser and two mutually coupled slave lasers. We observed ferromagnetic and antiferromagnetic orders in the in-phase and out-of-phase couplings between the two slave lasers. Their phase difference is locked to either 0 or p even if the coupling path is continuously modulated. The system automatically selects the oscillation frequency to satisfy the in-phase or out-of-phase coupling condition,
more » ... coupling condition, when the mutual coupling dominates over the injection-locking by the master laser.
doi:10.1364/oe.23.006029 pmid:25836827 fatcat:jzlno34sdbbkfec3zt5wio6jqe